KlaroOBD2 fault codes
Generic codes mean the same thing on every car. Find yours in the matching family.
P00xx — Fuel and air metering, auxiliary emission controls
This family covers the measurement of incoming air and injected fuel, together with the emission devices attached to them. A fault here distorts the mixture the engine burns, which costs fuel and raises emissions. Codes by part →
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0005Fuel Shutoff Valve Control Circuit/Open
- P0006Fuel Shutoff Valve Control Circuit Low
- P0007Fuel Shutoff Valve Control Circuit High
- P0008Engine Position System Performance (Bank1)
- P0009Engine Position System Performance (Bank2)
- P0010A Camshaft Position Actuator Circuit (Bank1)
- P0011A Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)
- P0012A Camshaft Position - Timing Over-Retarded (Bank 1)
- P0013B Camshaft Position - Actuator Circuit (Bank1)
- P0014B Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)
- P0015B Camshaft Position - Timing Over-Retarded (Bank 1)
- P0016Crankshaft Position Camshaft Position Correlation (Bank 1 Sensor A)
- P0017Crankshaft Position Camshaft Position Correlation (Bank 1 Sensor B)
- P0018Crankshaft Position Camshaft Position Correlation (Bank 2 Sensor A)
- P0019Crankshaft Position Camshaft Position Correlation (Bank 2 Sensor B)
- P0020A Camshaft Position Actuator Circuit (Bank 2)
- P0021A Camshaft Position - Timing Over-Advanced or System Performance (Bank 2)
- P0022A Camshaft Position - Timing Over-Retarded (Bank 2)
- P0023B Camshaft Position - Actuator Circuit (Bank 2)
- P0024B Camshaft Position - Timing Over-Advanced or System Performance (Bank 2)
- P0025B Camshaft Position - Timing Over-Retarded (Bank 2)
- P0026Intake Valve Control Solenoid Circuit Range/Performance (Bank 1)
- P0027Exhaust Valve Control Solenoid Circuit Range/Performance (Bank 1)
- P0028Intake Valve Control Solenoid Circuit Range/Performance (Bank 2)
- P0029Exhaust Valve Control Solenoid Circuit Range/Performance (Bank 2)
- P0030HO2S Heater Control Circuit (Bank 1 Sensor 1)
- P0031HO2S Heater Control Circuit Low (Bank 1 Sensor 1)
- P0032HO2S Heater Control Circuit High (Bank 1 Sensor 1)
- P0033Turbo Charger Bypass Valve Control Circuit
- P0034Turbo Charger Bypass Valve Control Circuit Low
- P0035Turbo Charger Bypass Valve Control Circuit High
- P0036HO2S Heater Control C ircuit (Bank 1 Sensor 2)
- P0037HO2S Heater Control Circuit Low (Bank 1 Sensor 2)
- P0038HO2S Heater Control Circuit High (Bank 1 Sensor 2)
- P0039Turbo/Super Charger Bypass Valve Control Circuit Range/Performance
- P0040O2 Sensor Signals Swapped Bank 1 Sensor 1/ Bank 2 Sensor 1
- P0041O2 Sensor Signals Swapped Bank 1 Sensor 2/ Bank 2 Sensor 2
- P0042HO2S Heater Control Circuit (Bank 1 Sensor 3)
- P0043HO2S Heater Control Circuit Low (Bank 1 Sensor 3)
- P0044HO2S Heater Control Circuit High (Bank 1 Sensor 3)
- P0045Turbo/Super Charger Boost Control Solenoid Circuit/Open
- P0046Turbo/Super Charger Boost Control Solenoid Circuit Range/Performance
- P0047Turbo/Super Charger Boost Control Solenoid Circuit Low
- P0048Turbo/Super Charger Boost Control Solenoid Circuit High
- P0049Turbo/Super Charger Turbine Overspeed
- P0050HO2S Heater Control Circuit (Bank 2 Sensor 1)
- P0051HO2S Heater Control Circuit Low (Bank 2 Sensor 1)
- P0052HO2S Heater Control Circuit High (Bank 2 Sensor 1)
- P0053HO2S Heater Resistance (Bank 1 Sensor 1)
- P0054HO2S Heater Resistance (Bank 1 Sensor 2)
- P0055HO2S Heater Resistance (Bank 1 Sensor 3)
- P0056HO2S Heater Control Circuit (Bank 2 Sensor 2)
- P0057HO2S Heater Control Circuit Low (Bank 2 Sensor 2)
- P0058HO2S Heater Control Circuit High (Bank 2 Sensor 2)
- P0059HO2S Heater Resistance (Bank 2 Sensor 1)
- P0060HO2S Heater Resistance (Bank 2 Sensor 2)
- P0061HO2S Heater Resistance (Bank 2 Sensor 3)
- P0062HO2S Heater Control Circuit (Bank 2 Sensor 3)
- P0063HO2S Heater Control Circuit Low (Bank 2 Sensor 3)
- P0064HO2S Heater Control Circuit High (Bank 2 Sensor 3)
- P0065Air Assisted Injector Control Range/Performance
- P0066Air Assisted Injector Control Circuit or Circuit Low
- P0067Air Assisted Injector Control Circuit High
- P0068MAP/MAF Throttle Position Correlation
- P0069Manifold Absolute Pressure Barometric Pressure Correlation
- P0070Ambient Air Temperature Sensor Circuit
- P0071Ambient Air Temperature Sensor Range/Performance
- P0072Ambient Air Temperature Sensor Circuit Low
- P0073Ambient Air Temperature Sensor Circuit High
- P0074Ambient Air Temperature Sensor Circuit Intermittent
- P0075Intake Valve Control Solenoid Circuit (Bank 1)
- P0076Intake Valve Control Solenoid Circuit Low (Bank 1)
- P0077Intake Valve Control Solenoid Circuit High (Bank 1)
- P0078Exhaust Valve Control Solenoid Circuit (Bank 1)
- P0079Exhaust Valve Control Solenoid Circuit Low (Bank 1)
- P0080Exhaust Valve Control Solenoid C ircuit High (Bank 1)
- P0081Intake Valve Control Solenoid Circuit (Bank 2)
- P0082Intake Valve Control Solenoid Circuit Low (Bank 2)
- P0083Intake Valve Control Solenoid Circuit High (Bank 2)
- P0084Exhaust Valve Control Solenoid Circuit (Bank 2)
- P0085Exhaust Valve Control Solenoid Circuit Low (Bank 2)
- P0086Exhaust Valve Control Solenoid C ircuit High (Bank 2)
- P0087Fuel Rail/System Pressure - Too Low
- P0088Fuel Rail/System Pressure - Too High
- P0089Fuel Pressure Regulator 1 Performance
- P0090Fuel Pressure Regulator 1 Control Circuit
- P0091Fuel Pressure Regulator 1 Control Circuit Low
- P0092Fuel Pressure Regulator 1 Control Circuit High
- P0093Fuel System Leak Detected Large Leak
- P0094Fuel System Leak Detected Small Leak
- P0095Intake Air Temperature Sensor 2 Circuit
- P0096Intake Air Temperature Sensor 2 Circuit Range/Performance
- P0097Intake Air Temperature Sensor 2 Circuit Low
- P0098Intake Air Temperature Sensor 2 Circuit High
- P0099Intake Air Temperature Sensor 2 Circuit Intermittent/Erratic
P01xx — Fuel and air metering
These codes concern the sensors that tell the control unit about the mixture: mass airflow, oxygen sensors, fuel trim corrections. They often point to an air leak or an ageing sensor rather than an outright failure. Codes by part →
- P0100Mass or Volume Air flow Circuit Malfunction
- P0101Mass or Volume Air flow Circuit Range/Performance Problem
- P0102Mass or Volume Air Flow Circuit low Input
- P0103Mass or Volume Air flow Circuit High Input
- P0104Mass or Volume Air flow Circuit Intermittent
- P0105Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction
- P0106Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem
- P0107Manifold Absolute Pressure/Barometric Pressure Circuit Low Input
- P0108Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- P0109Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent
- P0110Intake Air Temperature Circuit Malfunction
- P0111Intake Air Temperature Circuit Range/Performance Problem
- P0112Intake Air Temperature Circuit Low Input
- P0113Intake Air Temperature Circuit High Input
- P0114Intake Air Temperature Circuit Intermittent
- P0115Engine Coolant Temperature Circuit Malfunction
- P0116Engine Coolant Temperature Circuit Range/Performance Problem
- P0117Engine Coolant Temperature Circuit Low Input
- P0118Engine Coolant Temperature Circuit High Input
- P0119Engine Coolant Temperature Circuit Intermittent
- P0120Throttle Pedal Position Sensor/Switch A Circuit Malfunction
- P0121Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance Problem
- P0122Throttle/Pedal Position Sensor/Switch A Circuit Low Input
- P0123Throttle/Pedal Position Sensor/Switch A Circuit High Input
- P0124Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- P0125Insufficient Coolant Temperature for Closed Loop Fuel Control
- P0126Insufficient Coolant Temperature for Stable Operation
- P0130O2 Sensor Circuit Malfunction (Bank 1 Sensor 1)
- P0131O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)
- P0132O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)
- P0133O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)
- P0134O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
- P0135O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
- P0136O2 Sensor Circuit Malfunction (Bank 1 Sensor 2)
- P0137O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)
- P0138O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)
- P0139O2 Sensor Circuit Slow Response (Bank 1 Sensor 2)
- P0140O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)
- P0141O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
- P0142O2 Sensor Circuit Malfunction (Bank 1 Sensor 3)
- P0143O2 Sensor Circuit Low Voltage (Bank 1 Sensor 3)
- P0144O2 Sensor Circuit High Voltage (Bank 1 Sensor 3)
- P0145O2 Sensor Circuit Slow Response (Bank 1 Sensor 3)
- P0146O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 3)
- P0147O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 3)
- P0150O2 Sensor Circuit Malfunction (Bank 2 Sensor 1)
- P0151O2 Sensor Circuit Low Voltage (Bank 2 Sensor 1)
- P0152O2 Sensor Circuit High Voltage (Bank 2 Sensor 1)
- P0153O2 Sensor Circuit Slow Response (Bank 2 Sensor 1)
- P0154O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)
- P0155O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)
- P0156O2 Sensor Circuit Malfunction (Bank 2 Sensor 2)
- P0157O2 Sensor Circuit Low Voltage (Bank 2 Sensor 2)
- P0158O2 Sensor Circuit High Voltage (Bank 2 Sensor 2)
- P0159O2 Sensor Circuit Slow Response (Bank 2 Sensor 2)
- P0160O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)
- P0161O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)
- P0162O2 Sensor Circuit Malfunction (Bank 2 Sensor 3)
- P0163O2 Sensor Circuit Low Voltage (Bank 2 Sensor 3)
- P0164O2 Sensor Circuit High Voltage (Bank 2 Sensor 3)
- P0165O2 Sensor Circuit Slow Response (Bank 2 Sensor 3)
- P0166O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 3)
- P0167O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 3)
- P0170Fuel Trim Malfunction (Bank 1)
- P0171System Too Lean (Bank 1)
- P0172System Too Rich (Bank 1)
- P0173Fuel Trim Malfunction (Bank 2)
- P0174System Too Lean (Bank 2)
- P0175System Too Rich (Bank 2)
- P0176Fuel Composition Sensor Circuit Malfunction
- P0177Fuel Composition Sensor Circuit Range/Performance
- P0178Fuel Composition Sensor Circuit Low Input
- P0179Fuel Composition Sensor Circuit High Input
- P0180Fuel Temperature Sensor A Circuit Malfunction
- P0181Fuel Temperature Sensor A Circuit Performance
- P0182Fuel Temperature Sensor A Circuit low Input
- P0183Fuel Temperature Sensor A Circuit High Input
- P0184Fuel Temperature Sensor A Circuit Intermittent
- P0185Fuel Temperature Sensor B Circuit Malfunction
- P0186Fuel Temperature Sensor B Circuit Range/Performance
- P0187Fuel Temperature Sensor U Circuit Low Input
- P0188Fuel Temperature Sensor B Circuit High Input
- P0189Fuel Temperature Sensor B Circuit Intermittent
- P0190Fuel Rail Pressure Sensor Circuit Malfunction
- P0191Fuel Rail Pressure Sensor Circuit Range/Performance
- P0192Fuel Rail Pressure Sensor Circuit Low Input
- P0193Fuel Rail Pressure Sensor Circuit High Input
- P0194Fuel Rail Pressure Sensor Circuit Intermittent
- P0195Engine Oil Temperature Sensor Malfunction
- P0196Engine Oil Temperature Sensor Range/Performance
- P0197Engine Oil Temperature Sensor Low
- P0198Engine Oil Temperature Sensor High
- P0199Engine Oil Temperature Sensor Intermittent
P02xx — Injector circuit
These codes point directly at the injectors and their electrical control. An injector that no longer sprays properly unbalances combustion in its cylinder, and usually brings misfire codes with it. Codes by part →
- P0200Injector Circuit Malfunction
- P0201Injector Circuit Malfunction - Cylinder 1
- P0202Injector Circuit Malfunction - Cylinder 2
- P0203Injector Circuit Malfunction - Cylinder 3
- P0204Injector Circuit Malfunction - Cylinder 4
- P0205Injector Circuit Malfunction - Cylinder 5
- P0206Injector Circuit Malfunction - Cylinder 6
- P0207Injector Circuit Malfunction - Cylinder 7
- P0208Injector Circuit Malfunction - Cylinder 8
- P0209Injector Circuit Malfunction - Cylinder 9
- P0210Injector Circuit Malfunction - Cylinder 10
- P0211Injector Circuit Malfunction - Cylinder 11
- P0212Injector Circuit Malfunction - Cylinder 12
- P0213Cold Start Injector 1 Malfunction
- P0214Cold Start Injector 2 Malfunction
- P0215Engine Shutoff Solenoid Malfunction
- P0216Injection Timing Control Circuit Malfunction
- P0217Engine Overtemp Condition
- P0218Transmission Over Temperature Condition
- P0219Engine Over Speed Condition
- P0220Throttle/Pedal Position Sensor/Switch B Circuit Malfunction
- P0221Throttle/pedal Position Sensor/Switch B Circuit Range/Performance Problem
- P0222Throttle/pedal Position Sensor/Switch B Circuit Low Input
- P0223Throttle/Pedal Position Sensor/Switch B Circuit High Input
- P0224Throttle/Pedal Position Sensor/Switch B Circuit Intermittent
- P0225Throttle/Pedal Position Sensor/Switch C Circuit Malfunction
- P0226Throttle/Pedal Position Sensor/Switch C Circuit Range/Performance Problem
- P0227Throttle/Pedal Position Sensor/Switch C Circuit Low Input
- P0228Throttle/Pedal Position Sensor/Switch C Circuit High Input
- P0229Throttle/Pedal Position Sensor/Switch C Circuit Intermittent
- P0230Fuel Pump Primary Circuit Malfunction
- P0231Fuel Pump Secondary Circuit Low
- P0232Fuel Pump Secondary Circuit High
- P0233Fuel Pump Secondary Circuit Intermittent
- P0234Engine Overboost Condition
- P0235Turbocharger Boost Sensor A Circuit Malfunction
- P0236Turbocharger Boost Sensor A Circuit Range/Performance
- P0237Turbocharger Boost Sensor A Circuit Low
- P0238Turbocharger Boost Sensor A Circuit High
- P0239Turbocharger Boost Sensor B Circuit Malfunction
- P0240Turbocharger Boost Sensor B Circuit Range/Performance
- P0241Turbocharger Boost Sensor B Circuit Low
- P0242Turbocharger Boost Sensor B Circuit High
- P0243Turbocharger Wastegate Solenoid A Malfunction
- P0244Turbocharger Wastegate Solenoid A Range/Performance
- P0245Turbocharger Wastegate Solenoid A low
- P0246Turbocharger Wastegate Solenoid A High
- P0247Turbocharger Wastegate Solenoid B Malfunction
- P0248Turbocharger Wastegate Solenoid B Range/Performance
- P0249Turbocharger Wastegate Solenoid B Low
- P0250Turbocharger Wastegate Solenoid B High
- P0251Injection Pump Fuel Metering Control A Malfunction (Cam/Rotor/Injector)
- P0252Injection Pump Fuel Metering Control A Range/Performance (Cam/Rotor/Injector)
- P0253Injection Pump Fuel Metering Control A Low (Cam/Rotor/Injector)
- P0254Injection Pump Fuel Metering Control A High (Cam/Rotor/Injector)
- P0255Injection Pump Fuel Metering Control A Intermittent (Cam/Rotor/Injector)
- P0256Injection Pump Fuel Metering Control B Malfunction (Cam/Rotor/Injector)
- P0257Injection Pump Fuel Metering Control B Range/Performance (Cam/Rotor/Injector)
- P0258Injection Pump Fuel Metering Control B Low (Cam/Rotor/Injector)
- P0259Injection lump Fuel Metering Control B High (Cam/Rotor/Injector)
- P0260Injection Pump Fuel Metering Control B Intermittent (Cam/Rotor/Injector)
- P0261Cylinder 1 Injector Circuit Low
- P0262Cylinder 1 Injector Circuit High
- P0263Cylinder 1 Contribution/Balance Fault
- P0264Cylinder 2 Injector Circuit Low
- P0265Cylinder 2 Injector Circuit High
- P0266Cylinder 2 Contribution/Balance Fault
- P0267Cylinder 3 Injector Circuit Low
- P0268Cylinder 3 Injector Circuit High
- P0269Cylinder 3 Contribution/Balance Fault
- P0270Cylinder 4 Injector Circuit Low
- P0271Cylinder 4 Injector Circuit High
- P0272Cylinder 4 Contribution/Balance Fault
- P0273Cylinder 5 Injector Circuit Low
- P0274Cylinder 5 Injector Circuit High
- P0275Cylinder 5 Contribution/Balance Fault
- P0276Cylinder 6 Injector Circuit Low
- P0277Cylinder 6 Injector Circuit High
- P0278Cylinder 6 Contribution/Balance Fault
- P0279Cylinder 7 Injector Circuit Low
- P0280Cylinder 7 Injector Circuit High
- P0281Cylinder 7 Contribution/Balance Fault
- P0282Cylinder 8 Injector Circuit Low
- P0283Cylinder 8 Injector Circuit High
- P0284Cylinder 8 Contribution/Balance Fault
- P0285Cylinder 9 Injector Circuit Low
- P0286Cylinder 9 Injector Circuit High
- P0287Cylinder 9 Contribution/Balance Fault
- P0288Cylinder 10 Injector Circuit Low
- P0289Cylinder 10 Injector Circuit High
- P0290Cylinder 10 Contribution/balance Fault
- P0291Cylinder 11 Injector Circuit Low
- P0292Cylinder 11 Injector Circuit High
- P0293Cylinder 11 Contribution/balance Fault
- P0294Cylinder 12 Injector Circuit Low
- P0295Cylinder 12 Injector Circuit High
- P0296Cylinder 12 Contribution/Balance Fault
P03xx — Ignition and misfire
This is the most serious family of the set. A misfire sends unburnt fuel into the exhaust, where it destroys the catalytic converter within a few dozen kilometres. A flashing warning light means a misfire is happening now: stop driving. Codes by part →
- P0300Random/Multiple Cylinder Misfire Detected
- P0301Cylinder 1 Misfire Detected
- P0302Cylinder 2 Misfire Detected
- P0303Cylinder 3 Misfire Detected
- P0304Cylinder 4 Misfire Detected
- P0305Cylinder 5 Misfire Detected
- P0306Cylinder 6 Misfire Detected
- P0307Cylinder 7 Misfire Detected
- P0308Cylinder 8 Misfire Detected
- P0309Cylinder 9 Misfire Detected
- P0310Cylinder 10 Misfire Detected
- P0311Cylinder 11 Misfire Detected
- P0312Cylinder 12 Misfire Detected
- P0320Ignition/Distributor Engine Speed Input Circuit Malfunction
- P0321Ignition/Distributor Engine Speed Input Circuit Range/Performance
- P0322Ignition/Distributor Engine Speed Input Circuit No Signal
- P0323Ignition/Distributor Engine Speed Input Circuit Intermittent
- P0325Knock Sensor 1 Circuit Malfunction (Bank 1 or Single Sensor)
- P0326Knock Sensor 1 Circuit Range/Performance (Bank 1 or Single Sensor)
- P0327Knock Sensor 1 Circuit low Input (Bank 1 or Single Sensor)
- P0328Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor)
- P0329Knock Sensor 1 Circuit Input Intermittent (Bank 1 or Single Sensor)
- P0330Knock Sensor 2 Circuit Malfunction (Bank 2)
- P0331Knock Sensor 2 Circuit Range/Performance (Bank )
- P0332Knock Sensor 2 Circuit Low Input (Bank 2)
- P0333Knock Sensor 2 Circuit High Input (Bank 2)
- P0334Knock Sensor 2 Circuit Input Intermittent (Bank 2)
- P0335Crankshaft Position Sensor A Circuit Malfunction
- P0336Crankshaft Position Sensor A Circuit Range/Performance
- P0337Crankshaft Position Sensor A Circuit Low Input
- P0338Crankshaft Position Sensor A Circuit High Input
- P0339Crankshaft Position Sensor A Circuit Intermittent
- P0340Camshaft Position Sensor Circuit Malfunction
- P0341Camshaft Position Sensor Circuit Range/Performance
- P0342Camshaft Position Sensor Circuit Low Input
- P0343Camshaft Position Sensor Circuit High Input
- P0344Camshaft Position Sensor Circuit Intermittent
- P0350Ignition Coil Primary/Secondary Circuit Malfunction
- P0351Ignition Coil A Primary/Secondary Circuit Malfunction
- P0352Ignition Coil B Primary/Secondary Circuit Malfunction
- P0353Ignition Coil C Primary/Secondary Circuit Malfunction
- P0354Ignition Coil D Primary/Secondary Circuit Malfunction
- P0355Ignition Coil B Primary/Secondary Circuit Malfunction
- P0356Ignition Coil F Primary/Secondary Circuit Malfunction
- P0357Ignition Coil G Primary/Secondary Circuit Malfunction
- P0358Ignition Coil H Primary/Secondary Circuit Malfunction
- P0359Ignition Coil I Primary/Secondary Circuit Malfunction
- P0360Ignition Coil I Primary/Secondary Circuit Malfunction
- P0361Ignition Coil K Primary/Secondary Circuit Malfunction
- P0362Ignition Coil L Primary/Secondary Circuit Malfunction
- P0370Timing Reference High Resolution Signal A Malfunction
- P0371Timing Reference High Resolution Signal A Too Many Pulses
- P0372Timing Reference High Resolution Signal A Too Few Pulses
- P0373Timing Reference High Resolution Signal A Intermittent/Erratic Pulses
- P0374Timing Reference High Resolution Signal A No Pulses
- P0375Timing Reference High Resolution Signal B Malfunction
- P0376Timing Reference High Resolution Signal B Too Many Pulses
- P0377Timing Reference High Resolution Signal B Too Few Pulses
- P0378Timing Reference High Resolution Signal B Intermittent/Erratic Pulses
- P0379Timing Reference High Resolution Signal B No Pulses
- P0380Glow Plug/Heater Circuit A Malfunction
- P0381Glow Plug/Heater Indicator Circuit Malfunction
- P0382Glow Plug/Heater Circuit B Malfunction
- P0385Crankshaft Position Sensor B Circuit Malfunction
- P0386Crankshaft Position Sensor B Circuit Range/Performance
- P0387Crankshaft Position Sensor B Circuit Low Input
- P0388Crankshaft Position Sensor B Circuit High Input
- P0389Crankshaft Position Sensor B Circuit Intermittent
P04xx — Emission controls
Catalytic converter, exhaust gas recirculation, particulate filter, fuel vapour. These faults rarely leave you stranded, but they fail the roadworthiness test and become expensive if left alone. Codes by part →
- P0400Exhaust Gas Recirculation Flow Malfunction
- P0401Exhaust Gas Recirculation Flow Insufficient Detected
- P0402Exhaust Gas Recirculation Flow Excessive Detected
- P0403Exhaust Gas Recirculation Circuit Malfunction
- P0404Exhaust Gas Recirculation Circuit Range/Performance
- P0405Exhaust Gas Recirculation Sensor A Circuit Low
- P0406Exhaust Gas Recirculation Sensor A Circuit High
- P0407Exhaust Gas Recirculation Sensor B Circuit Low
- P0408Exhaust Gas Recirculation Sensor B Circuit High
- P0410Secondary Air Injection System Malfunction
- P0411Secondary Air Injection System Incorrect Flow Detected
- P0412Secondary Air Injection System Switching Valve A Circuit Malfunction
- P0413Secondary Air Injection System Switching Valve A Circuit Open
- P0414Secondary Air Injection System Switching Valve A Circuit Shorted
- P0415Secondary Air Injection System Switching Valve B Circuit Malfunction
- P0416Secondary Air Injection System Switching Valve B Circuit Open
- P0417Secondary Air Injection System Switching Valve B Circuit Shorted
- P0418Secondary Air Injection System Relay A circuit Malfunction
- P0419Secondary Air Injection System Relay B Circuit Malfunction
- P0420Catalyst System Efficiency Below Threshold (Bank 1)
- P0421Warm Up Catalyst Efficiency Below Threshold (Bank 1)
- P0422Main Catalyst Efficiency Below Threshold (Bank 1)
- P0423Heated Catalyst Efficiency Below Threshold (Bank l)
- P0424Heated Catalyst Temperature Below Threshold (Bank 1)
- P0430Catalyst System Efficiency Below Threshold (Bank 2)
- P0431Warm Up Catalyst Efficiency Below Threshold (Bank 2)
- P0432Main Catalyst Efficiency Below Threshold (Bank 2)
- P0433Heated Catalyst Efficiency Below Threshold (Bank 2)
- P0434Heated Catalyst Temperature Below Threshold (Bank 2)
- P0440Evaporative Emission Control System Malfunction
- P0441Evaporative Emission Control System Incorrect Purge flow
- P0442Evaporative Emission Control System leak Detected (small leak)
- P0443Evaporative Emission Control System Purge Control Valve circuit Malfunction
- P0444Evaporative Emission Control System Purge Control Valve Circuit Open
- P0445Evaporative Emission Control System Purge Control Valve Circuit Shorted
- P0446Evaporative Emission Control System Vent Control Circuit Malfunction
- P0447Evaporative Emission Control System Vent Control Circuit Open
- P0448Evaporative Emission Control System Vent Control Circuit Shorted
- P0449Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction
- P0450Evaporative Emission Control System Pressure Sensor Malfunction
- P0451Evaporative Emission Control System Pressure Sensor Range/Performance
- P0452Evaporative Emission Control System Pressure Sensor Low Input
- P0453Evaporative Emission Control System Pressure Sensor High Input
- P0454Evaporative Emission Control System Pressure Sensor Intermittent
- P0455Evaporative Emission Control System Tank Detected (gross leak)
- P0460Fuel Level Sensor Circuit Malfunction
- P0461Fuel Level Sensor Circuit Range/Performance
- P0462Fuel level Sensor Circuit Low Input
- P0463Fuel level Sensor Circuit High Input
- P0464Fuel level Sensor Circuit Intermittent
- P0465Purge Flow Sensor Circuit Malfunction
- P0466Purge flow Sensor Circuit Range/Performance
- P0467Purge Flow Sensor Circuit Low Input
- P0468Purge flow Sensor Circuit High Input
- P0469Purge flow Sensor Circuit Intermittent
- P0470Exhaust Pressure Sensor Malfunction
- P0471Exhaust Pressure Sensor Range/Performance
- P0472Exhaust Pressure Sensor Low
- P0473Exhaust Pressure Sensor High
- P0474Exhaust Pressure Sensor Intermittent
- P0475Exhaust Pressure Control Valve Malfunction
- P0476Exhaust Pressure Control Valve Range/Performance
- P0477Exhaust Pressure Control Valve Low
- P0478Exhaust Pressure Control Valve High
- P0479Exhaust Pressure Control Valve Intermittent
- P0480Cooling Fan 1 Control Circuit Malfunction
- P0481Cooling Fan 2 Control Circuit Malfunction
- P0482Cooling Fan 3 Control Circuit Malfunction
- P0483Cooling Fan Rationality Check Malfunction
- P0484Cooling Fan Circuit Over Current
- P0485Cooling Fan Power/Ground Circuit Malfunction
P05xx — Idle speed and vehicle speed control
Unstable idle, cruise control, auxiliary inputs to the control unit. These codes show up as erratic behaviour at a standstill, or a function that refuses to engage. Codes by part →
- P0500Vehicle Speed Sensor Malfunction
- P0501Vehicle Speed Sensor Range/Performance
- P0502Vehicle Speed Sensor Circuit Low Input
- P0503Vehicle Speed Sensor Intermittent/Erratic/High
- P0505Idle Control System Malfunction
- P0506Idle Control System RPM lower Than Expected
- P0507Idle Control System RPM higher Than Expected
- P0510Closed Throttle Position Switch Malfunction
- P0520Engine Oil Pressure Sensor/Switch Circuit Malfunction
- P0521Engine Oil Pressure Sensor/Switch Range/Performance
- P0522Engine Oil Pressure Sensor/Switch Low Voltage
- P0523Engine Oil Pressure Sensor/Switch High Voltage
- P0530A/C Refrigerant Pressure Sensor Circuit Malfunction
- P0531A/C Refrigerant Pressure Sensor Circuit Range/Performance
- P0532A/C Refrigerant Pressure Sensor Circuit Low Input
- P0533A/C Refrigerant pressure Sensor Circuit High Input
- P0534Air Conditioner Refrigerant Charge Loss
- P0550Power Steering Pressure Sensor Circuit Malfunction
- P0551Power Steering Pressure Sensor Circuit Range/Performance
- P0552Power Steering Pressure Sensor Circuit Low Input
- P0553Power Steering Pressure Sensor Circuit High Input
- P0554Power Steering Pressure sensor Circuit Intermittent
- P0560System Voltage Malfunction
- P0561System Voltage Unstable
- P0562System Voltage Low
- P0563System Voltage High
- P0565Cruise Control On Signal Malfunction
- P0566Cruise Control Off Signal Malfunction
- P0567Cruise Control Resume Signal Malfunction
- P0568Cruise Control Set Signal Malfunction
- P0569Cruise Control Coast Signal Malfunction
- P0570Cruise Control Accel Signal Malfunction
- P0571Cruise Control/Brake Switch A Circuit Malfunction
- P0572Cruise Control/Brake Switch A Circuit Low
- P0573Cruise Control/Brake Switch A Circuit High
- P0574through P0580 Reserved for Cruise Codes
P06xx — Control unit and output circuits
Faults internal to the engine control unit or to its output circuits. Before suspecting the unit itself, which seldom fails, check grounds, connectors and battery voltage. Codes by part →
- P0600Serial Communication Link Malfunction
- P0601Internal Control Module Memory Check Sum Error
- P0602Control Module Programming Error
- P0603Internal Control Module Keep Alive Memory (KAM) Error
- P0604Internal Control Module RAM Error
- P0605Internal Control Module ROM Error (Module Identification Defined by SAE J1979)
- P0606PCM Processor Fault
- P0608Control Module VSS Output A Malfunction
- P0609Control Module VSS Output B Malfunction
- P0620Generator Control Circuit Malfunction
- P0621Generator Lamp L Control Circuit Malfunction
- P0622Generator Field F Control Circuit Malfunction
- P0650Malfunction Indicator Lamp (MIL) Control Circuit Malfunction
- P0654Engine RPM Output Circuit Malfunction
- P0655Engine Hot Lamp Output Control Circuit Malfunction
- P0656Fuel Level Output Circuit Malfunction
P07xx — Transmission
Automatic or automated gearbox: ratios, clutches, speed sensors. These codes often come with a limp mode that locks the box in a single gear. Codes by part →
- P0700Transmission Control System Malfunction
- P0701Transmission Control System Range/Performance
- P0702Transmission Control System Electrical
- P0703Torque Converter/Brake Switch B Circuit Malfunction
- P0704Clutch Switch Input Circuit Malfunction
- P0705Transmission Range Sensor Circuit malfunction (PRNDL Input)
- P0706Transmission Range Sensor Circuit Range/Performance
- P0707Transmission Range Sensor Circuit Low Input
- P0708Transmission Range Sensor Circuit High Input
- P0709Transmission Range Sensor Circuit Intermittent
- P0710Transmission Fluid Temperature Sensor Circuit Malfunction
- P0711Transmission Fluid Temperature Sensor Circuit Range/Performance
- P0712Transmission Fluid Temperature Sensor Circuit Low Input
- P0713Transmission Fluid Temperature Sensor Circuit High Input
- P0714Transmission Fluid Temperature Sensor Circuit Intermittent
- P0715Input/Turbine Speed Sensor Circuit Malfunction
- P0716Input/Turbine Speed Sensor Circuit Range/Performance
- P0717Input/Turbine Speed Sensor Circuit No Signal
- P0718Input/Turbine Speed Sensor Circuit Intermittent
- P0719Torque Converter/Brake Switch B Circuit Low
- P0720Output Speed Sensor Circuit Malfunction
- P0721Output Speed Sensor Range/Performance
- P0722Output Speed Sensor No Signal
- P0723Output Speed Sensor Intermittent
- P0724Torque Converter/Brake Switch B Circuit High
- P0725Engine Speed input Circuit Malfunction
- P0726Engine Speed Input Circuit Range/Performance
- P0727Engine Speed Input Circuit No Signal
- P0728Engine Speed Input Circuit Intermittent
- P0730Incorrect Gear Ratio
- P0731Gear 1 Incorrect ratio
- P0732Gear 2 Incorrect ratio
- P0733Gear 3 Incorrect ratio
- P0734Gear 4 Incorrect ratio
- P0735Gear 5 Incorrect ratio
- P0736Reverse incorrect gear ratio
- P0740Torque Converter Clutch Circuit Malfuction
- P0741Torque Converter Clutch Circuit Performance or Stuck Off
- P0742Torque Converter Clutch Circuit Stuck On
- P0743Torque Converter Clutch Circuit Electrical
- P0744Torque Converter Clutch Circuit Intermittent
- P0745Pressure Control Solenoid Malfunction
- P0746Pressure Control Solenoid Performance or Stuck Off
- P0747Pressure Control Solenoid Stuck On
- P0748Pressure Control Solenoid Electrical
- P0749Pressure Control Solenoid Intermittent
- P0750Shift Solenoid A Malfunction
- P0751Shift Solenoid A Performance or Stuck Off/1-2 Shift Solenoid Valve Performance
- P0752Shift Solenoid A Stuck On
- P0753Shift Solenoid A Electrical/1-2 Shift Solenoid Circuit Electrical
- P0754Shift Solenoid A Intermittent
- P0755Shift Solenoid B Malfunction
- P0756Shift Solenoid B Performance or Stuck Off/2-3 Shift Solenoid Valve Performance
- P0757Shift Solenoid B Stuck On
- P0758Shift Solenoid B Electrical/2-3 Shift Solenoid Circuit Electrical
- P0759Shift Solenoid B Intermittent
- P0760Shift Solenoid C Malfunction
- P0761Shift Solenoid C Performance or Stuck Off
- P0762Shift Solenoid C Stuck On
- P0763Shift Solenoid C Electrical
- P0764Shift Solenoid C Intermittent
- P0765Shift Solenoid D Malfunction
- P0766Shift Solenoid D Performance or Stuck Off
- P0767Shift Solenoid D Stuck On
- P0768Shift Solenoid D Electrical
- P0769Shift Solenoid D Intermittent
- P0770Shift Solenoid E Malfunction
- P0771Shift Solenoid E Performance or Stuck Off
- P0772Shift Solenoid E Stuck On
- P0773Shift Solenoid E Electrical
- P0774Shift Solenoid E Intermittent
- P0775Pressure Control Solenoid B Malfunction
- P0776Pressure Control Solenoid B Performance
- P0777Pressure Control Solenoid B Stuck On
- P0778Pressure Control Solenoid B Electrical
- P0779Pressure Control Solenoid B Intermittent
- P0780Shift Malfunction
- P07811-2 Shift Malfunction
- P07822-3 Shift Malfunction
- P07833-4 Shift Malfunction
- P07844-5 Shift Malfunction
- P0785Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- P0786Shift/Timing Solenoid Range/Performance
- P0787Shift/Timing Solenoid Low
- P0788Shift/Timing Solenoid High
- P0789Shift/Timing Solenoid Intermittent
- P0790Normal/Performance Switch Circuit Malfunction
- P0791Intermediate Shaft Speed Sensor Circuit
- P0792Intermediate Shaft Speed Sensor Circuit Range/Performance
- P0793Intermediate Shaft Speed Sensor Circuit No signal
- P0794Intermediate Shaft Speed Sensor Circuit Intermittent
- P0795Pressure Control Solenoid C
- P0796Pressure Control Solenoid C Performance or Stuck off
- P0797Pressure Control Solenoid C Stuck On
- P0798Pressure Control Solenoid C Electrical
- P0799Pressure Control Solenoid C Intermittent
P08xx — Transmission (continued)
A continuation of the previous family: transmission controls, solenoids and sensors. Diagnosis nearly always requires the manufacturer's documentation. Codes by part →
- P0801Reverse Inhibit Control Circuit Malfunction
- P08031-4 Upshift (Skip Shift) Solenoid Control Circuit Malfunction
- P08041-4 Upshift (Skip Shift) Lamp Control Circuit Malfunction
- P0805Clutch Position Sensor Circuit Malfunction
- P0806Clutch Position Sensor Circuit Range/Performance Malfunction
- P0807Clutch Position Sensor Circuit Low Malfunction
- P0808Clutch Position Sensor Circuit High Malfunction
- P0809Clutch Position Sensor Circuit Intermittent Malfunction
- P0810Clutch Position Control Error
- P0811Excessive Clutch Slippage
- P0812Reverse Input Circuit
- P0813Reverse Output Circuit
- P0814Transmission Range Display Circuit
- P0815Upshift Switch Circuit
- P0816Downshift Switch Circuit
- P0817Starter Disable Circuit
- P0818Driveline Disconnect Switch Input Circuit
- P0819Up and Down Shift Switch to Transmission Range Correlation
- P0820Gear Lever X - Y Position Sensor Circuit
- P0821Gear Lever X Position Circuit
- P0822Gear Lever Y Position Circuit
- P0823Gear Lever X Position Circuit Intermittent
- P0824Gear Lever Y Position Circuit Intermittent
- P0825Gear Lever Push - Pull Switch (Shift Anticipate)
- P0826Up and Down Switch Input Circuit
- P0827Up and Down Switch Input Circuit Low
- P0828Up and Down Switch Input Circuit High
- P08295-6 Shift
- P0830Clutch Pedal Switch A Circuit
- P0831Clutch Pedal Switch A Circuit Low
- P0832Clutch Pedal Switch A Circuit High
- P0833Clutch Pedal Switch B Circuit
- P0834Clutch Pedal Switch B Circuit Low
- P0835Clutch Pedal Switch B Circuit High
- P0836Four Wheel Drive (4WD) Switch Circuit
- P0837Four Wheel Drive (4WD) Switch Circuit Range/Performance
- P0838Four Wheel Drive (4WD) Switch Circuit Low
- P0839Four Wheel Drive (4WD) Switch Circuit High
- P0840Transmission Fluid Pressure Sensor/Switch A Circuit
- P0841Transmission Fluid Pressure Sensor/Switch A Circuit Range/Performance
- P0842Transmission Fluid Pressure Sensor/Switch A Circuit Low
- P0843Transmission Fluid Pressure Sensor/Switch A Circuit High
- P0844Transmission Fluid Pressure Sensor/Switch A Circuit Intermittent
- P0845Transmission Fluid Pressure Sensor/Switch B Circuit
- P0846Transmission Fluid Pressure Sensor/Switch B Circuit Range/Performance
- P0847Transmission Fluid Pressure Sensor/Switch B Circuit Low
- P0848Transmission Fluid Pressure Sensor/Switch B Circuit High
- P0849Transmission Fluid Pressure Sensor/Switch B Circuit Intermittent
- P0850Park / Neutral Switch Input Circuit
- P0851Park / Neutral Switch Input Circuit Low
- P0852Park / Neutral Switch Input Circuit High
- P0853Drive Switch Input Circuit
- P0854Drive Switch Input Circuit Low
- P0855Drive Switch Input Circuit High
- P0856Traction Control Input Signal
- P0857Traction Control Input Signal Range/Performance
- P0858Traction Control Input Signal Low
- P0859Traction Control Input Signal High
- P0860Gear Shift Module Communication Circuit
- P0861Gear Shift Module Communication Circuit Low
- P0862Gear Shift Module Communication Circuit High
- P0863TCM Communication Circuit
- P0864TCM Communication Circuit Range/Performance
- P0865TCM Communication Circuit Low
- P0866TCM Communication Circuit High
- P0867Transmission Fluid Pressure
- P0868Transmission Fluid Pressure Low
- P0869Transmission Fluid Pressure High
- P0870Transmission Fluid Pressure Sensor/Switch C Circuit
- P0871Transmission Fluid Pressure Sensor/Switch C Circuit Range/Performance
- P0872Transmission Fluid Pressure Sensor/Switch C Circuit Low
- P0873Transmission Fluid Pressure Sensor/Switch C Circuit High
- P0874Transmission Fluid Pressure Sensor/Switch C Circuit Intermittent
- P0875Transmission Fluid Pressure Sensor/Switch D Circuit
- P0876Transmission Fluid Pressure Sensor/Switch D Circuit Range/Performance
- P0877Transmission Fluid Pressure Sensor/Switch D Circuit Low
- P0878Transmission Fluid Pressure Sensor/Switch D Circuit High
- P0879Transmission Fluid Pressure Sensor/Switch D Circuit Intermittent
- P0880TCM Power Input Signal
- P0881TCM Power Input Signal Range/Performance
- P0882TCM Power Input Signal Low
- P0883TCM Power Input Signal High
- P0884TCM Power Input Signal Intermittent
- P0885TCM Power Relay Control Circuit /Open
- P0886TCM Power Relay Control Circuit Low
- P0887TCM Power Relay Control Circuit High
- P0888TCM Power Relay Sense Circuit
- P0889TCM Power Relay Sense Circuit Range/Performance
- P0890TCM Power Relay Sense Circuit Low
- P0891TCM Power Relay Sense Circuit High
- P0892TCM Power Relay Sense Circuit Intermittent
- P0893Multiple Gears Engaged
- P0894Transmission Component Slipping
- P0895Shift Time Too Short
- P0896Shift Time Too Long
- P0897Transmission Fluid Deteriorated
- P0898Transmission Control System MIL Request Circuit Low
- P0899Transmission Control System MIL Request Circuit High
P09xx — Transmission and controls
The last transmission-related series, including gear selection controls. Like the previous one, it belongs in a workshop rather than a roadside fix. Codes by part →
- P0900Clutch Actuator Circuit / Open
- P0901Clutch Actuator Circuit Range/Performance
- P0902Clutch Actuator Circuit Low
- P0903Clutch Actuator Circuit High
- P0904Gate Select Position Circuit [senses left / right position]
- P0905Gate Select Position Circuit Range/Performance
- P0906Gate Select Position Circuit Low
- P0907Gate Select Position Circuit High
- P0908Gate Select Position Circuit Intermittent
- P0909Gate Select Control Error
- P0910Gate Select Actuator Circuit / Open [left / right motion]
- P0911Gate Select Actuator Circuit Range/Performance
- P0912Gate Select Actuator Circuit Low
- P0913Gate Select Actuator Circuit High
- P0914Gear Shift Position Circuit [senses forward / rearward position, odd / even gears]
- P0915Gear Shift Position Circuit Range/Performance
- P0916Gear Shift Position Circuit Low
- P0917Gear Shift Position Circuit High
- P0918Gear Shift Position Circuit Intermittent
- P0919Gear Shift Position Control Error
- P0920Gear Shift Forward Actuator Circuit / Open [forward motion, odd gears, 1,3,5]
- P0921Gear Shift Foward Actuator Circuit Range/Performance
- P0922Gear Shift Foward Actuator Circuit Low
- P0923Gear Shift Foward Actuator Circuit High
- P0924Gear Shift Reverse Actuator Circuit / Open [rearward motion, even gears, 2,4,6]
- P0925Gear Shift Reverse Actuator Circuit Range/Performance
- P0926Gear Shift Reverse Actuator Circuit Low
- P0927Gear Shift Reverse Actuator Circuit High
- P0928Gear Shift Lock Solenoid Circuit / Open
- P0929Gear Shift Lock Solenoid Circuit Range/Performance
- P0930Gear Shift Lock Solenoid Circuit Low
- P0931Gear Shift Lock Solenoid Circuit High
- P0932Hydraulic Pressure Sensor Circuit
- P0933Hydraulic Pressure Sensor Range/Performance
- P0934Hydraulic Pressure Sensor Circuit Low Input
- P0935Hydraulic Pressure Sensor Circuit High Input
- P0936Hydraulic Pressure Sensor Circuit Intermittent
- P0937Hydraulic Oil Temperature Sensor Circuit
- P0938Hydraulic Oil Temperature Sensor Range/Performance
- P0939Hydraulic Oil Temperature Sensor Circuit Low Input
- P0940Hydraulic Oil Temperature Sensor Circuit High Input
- P0941Hydraulic Oil Temperature Sensor Circuit Intermittent
- P0942Hydraulic Pressure Unit
- P0943Hydraulic Pressure Unit Cycling Period Too Short
- P0944Hydraulic Pressure Unit Loss of Pressure
- P0945Hydraulic Pump Relay Circuit / Open
- P0946Hydraulic Pump Relay Circuit Range/Performance
- P0947Hydraulic Pump Relay Circuit Low
- P0948Hydraulic Pump Relay Circuit High
- P0949ASM Adaptive Learning Not Done
- P0950ASM Control Circuit [Up / Down / Auto / etc]
- P0951ASM Control Circuit Range/Performance
- P0952ASM Control Circuit Low
- P0953ASM Control Circuit High
- P0954ASM Control Circuit Intermittent
- P0955ASM Mode Circuit [Perf / Winter / Sport / etc]
- P0956ASM Mode Circuit Range/Performance
- P0957ASM Mode Circuit Low
- P0958ASM Mode Circuit High
- P0959ASM Mode Circuit Intermittent
- P0960Pressure Control Solenoid A Control Circuit / Open
- P0961Pressure Control Solenoid A Control Circuit Range/Performance
- P0962Pressure Control Solenoid A Control Circuit Low
- P0963Pressure Control Solenoid A Control Circuit High
- P0964Pressure Control Solenoid B Control Circuit / Open
- P0965Pressure Control Solenoid B Control Circuit Range/Performance
- P0966Pressure Control Solenoid B Control Circuit Low
- P0967Pressure Control Solenoid B Control Circuit High
- P0968Pressure Control Solenoid C Control Circuit / Open
- P0969Pressure Control Solenoid C Control Circuit Range/Performance
- P0970Pressure Control Solenoid C Control Circuit Low
- P0971Pressure Control Solenoid C Control Circuit High
- P0972Shift Solenoid A Control Circuit Range/Performance
- P0973Shift Solenoid A Control Circuit Low
- P0974Shift Solenoid A Control Circuit High
- P0975Shift Solenoid B Control Circuit Range/Performance
- P0976Shift Solenoid B Control Circuit Low
- P0977Shift Solenoid B Control Circuit High
- P0978Shift Solenoid C Control Circuit Range/Performance
- P0979Shift Solenoid C Control Circuit Low
- P0980Shift Solenoid C Control Circuit High
- P0981Shift Solenoid D Control Circuit Range/Performance
- P0982Shift Solenoid D Control Circuit Low
- P0983Shift Solenoid D Control Circuit High
- P0984Shift Solenoid E Control Circuit Range/Performance
- P0985Shift Solenoid E Control Circuit Low
- P0986Shift Solenoid E Control Circuit High
- P0987Transmission Fluid Pressure Sensor/Switch E Circuit
- P0988Transmission Fluid Pressure Sensor/Switch E Circuit Range/Performance
- P0989Transmission Fluid Pressure Sensor/Switch E Circuit Low
- P0990Transmission Fluid Pressure Sensor/Switch E Circuit High
- P0991Transmission Fluid Pressure Sensor/Switch E Circuit Intermittent
- P0992Transmission Fluid Pressure Sensor/Switch F Circuit
- P0993Transmission Fluid Pressure Sensor/Switch F Circuit Range/Performance
- P0994Transmission Fluid Pressure Sensor/Switch F Circuit Low
- P0995Transmission Fluid Pressure Sensor/Switch F Circuit High
- P0996Transmission Fluid Pressure Sensor/Switch F Circuit Intermittent
- P0997Shift Solenoid F Control Circuit Range/Performance
- P0998Shift Solenoid F Control Circuit Low
- P0999Shift Solenoid F Control Circuit High
P20xx — Fuel, air and emission controls
These codes extend the P00xx and P01xx series: intake manifold flaps, exhaust temperature sensors, and the after-treatment systems of recent engines, such as the diesel particulate filter and the AdBlue/SCR system. Codes by part →
- P2002Diesel Particulate Filter Efficiency Below Threshold (Bank 1)
- P2003Diesel Particulate Filter Efficiency Below Threshold (Bank 2)
- P2004Intake Manifold Runner Control Stuck Open (Bank 1)
- P2005Intake Manifold Runner Control Stuck Open (Bank 2)
- P2006Intake Manifold Runner Control Stuck Closed (Bank 1)
- P2007Intake Manifold Runner Control Stuck Closed (Bank 2)
- P2008Intake Manifold Runner Control Circuit/Open (Bank 1)
- P2009Intake Manifold Runner Control Circuit Low (Bank 1)
- P2010Intake Manifold Runner Control Circuit High (Bank 1)
- P2015Intake Manifold Runner Position Sensor/Switch Circuit Range/Performance (Bank 1)
- P2031Exhaust Gas Temperature Sensor Circuit (Bank 1 Sensor 2)
- P2032Exhaust Gas Temperature Sensor Circuit Low (Bank 1 Sensor 2)
- P2033Exhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 2)
- P203BReductant Level Sensor Circuit Range/Performance
- P203FReductant Level Too Low
- P2047Reductant Injector Circuit/Open (Bank 1 Unit 1)
- P204FReductant System Performance (Bank 1)
- P2080Exhaust Gas Temperature Sensor Circuit Range/Performance (Bank 1 Sensor 1)
- P2096Post Catalyst Fuel Trim System Too Lean (Bank 1)
- P2097Post Catalyst Fuel Trim System Too Rich (Bank 1)
- P2098Post Catalyst Fuel Trim System Too Lean (Bank 2)
- P2099Post Catalyst Fuel Trim System Too Rich (Bank 2)
- P20E8Reductant Pressure Too Low
- P20E9Reductant Pressure Too High
- P20EESCR NOx Catalyst Efficiency Below Threshold (Bank 1)
- P20EFSCR NOx Catalyst Efficiency Below Threshold (Bank 2)
P21xx — Electronic throttle and mixture
Mostly the electronic throttle — its motor, its position sensors and the accelerator pedal — and the mixture corrections at idle and off idle. Codes by part →
- P2100Throttle Actuator Control Motor Circuit/Open
- P2101Throttle Actuator Control Motor Circuit Range/Performance
- P2102Throttle Actuator Control Motor Circuit Low
- P2103Throttle Actuator Control Motor Circuit High
- P2104Throttle Actuator Control System - Forced Idle
- P2105Throttle Actuator Control System - Forced Engine Shutdown
- P2106Throttle Actuator Control System - Forced Limited Power
- P2107Throttle Actuator Control Module Processor
- P2108Throttle Actuator Control Module Performance
- P2110Throttle Actuator Control System - Forced Limited RPM
- P2111Throttle Actuator Control System - Stuck Open
- P2112Throttle Actuator Control System - Stuck Closed
- P2118Throttle Actuator Control Motor Current Range/Performance
- P2119Throttle Actuator Control Throttle Body Range/Performance
- P2122Throttle/Pedal Position Sensor/Switch D Circuit Low Input
- P2123Throttle/Pedal Position Sensor/Switch D Circuit High Input
- P2127Throttle/Pedal Position Sensor/Switch E Circuit Low Input
- P2128Throttle/Pedal Position Sensor/Switch E Circuit High Input
- P2135Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation
- P2138Throttle/Pedal Position Sensor/Switch D/E Voltage Correlation
- P2146Fuel Injector Group A Supply Voltage Circuit/Open
- P2149Fuel Injector Group B Supply Voltage Circuit/Open
- P2177System Too Lean Off Idle (Bank 1)
- P2178System Too Rich Off Idle (Bank 1)
- P2179System Too Lean Off Idle (Bank 2)
- P2180System Too Rich Off Idle (Bank 2)
- P2181Cooling System Performance
- P2187System Too Lean at Idle (Bank 1)
- P2188System Too Rich at Idle (Bank 1)
- P2189System Too Lean at Idle (Bank 2)
- P2190System Too Rich at Idle (Bank 2)
- P2191System Too Lean at Higher Load (Bank 1)
- P2195O2 Sensor Signal Stuck Lean (Bank 1 Sensor 1)
- P2196O2 Sensor Signal Stuck Rich (Bank 1 Sensor 1)
- P2197O2 Sensor Signal Stuck Lean (Bank 2 Sensor 1)
- P2198O2 Sensor Signal Stuck Rich (Bank 2 Sensor 1)
P22xx — Fuel and air metering sensors
Oxygen and NOx sensors, barometric pressure, turbo boost performance and intake leaks: the measurements the control unit relies on to meter air and fuel. Codes by part →
- P2200NOx Sensor Circuit (Bank 1 Sensor 1)
- P2201NOx Sensor Circuit Range/Performance (Bank 1 Sensor 1)
- P2227Barometric Pressure Circuit Range/Performance
- P2228Barometric Pressure Circuit Low
- P2229Barometric Pressure Circuit High
- P2237O2 Sensor Positive Current Control Circuit/Open (Bank 1 Sensor 1)
- P2243O2 Sensor Reference Voltage Circuit/Open (Bank 1 Sensor 1)
- P2251O2 Sensor Negative Current Control Circuit/Open (Bank 1 Sensor 1)
- P2263Turbo/Super Charger Boost System Performance
- P2270O2 Sensor Signal Stuck Lean (Bank 1 Sensor 2)
- P2271O2 Sensor Signal Stuck Rich (Bank 1 Sensor 2)
- P2272O2 Sensor Signal Stuck Lean (Bank 2 Sensor 2)
- P2273O2 Sensor Signal Stuck Rich (Bank 2 Sensor 2)
- P2279Intake Air System Leak
- P2293Fuel Pressure Regulator 2 Performance
P23xx — Ignition system
The primary and secondary circuits of the ignition coils, coil by coil. A coil fault usually causes misfires on the cylinder it feeds. Codes by part →
- P2300Ignition Coil A Primary Control Circuit Low
- P2301Ignition Coil A Primary Control Circuit High
- P2302Ignition Coil A Secondary Circuit
- P2303Ignition Coil B Primary Control Circuit Low
- P2304Ignition Coil B Primary Control Circuit High
- P2306Ignition Coil C Primary Control Circuit Low
- P2307Ignition Coil C Primary Control Circuit High
- P2309Ignition Coil D Primary Control Circuit Low
- P2310Ignition Coil D Primary Control Circuit High
P24xx — Auxiliary emission controls
EGR valve and cooler, fuel vapour recovery, secondary air injection and the diesel particulate filter: the systems that clean up what the engine emits. Codes by part →
- P2401Evaporative Emission System Leak Detection Pump Control Circuit Low
- P2402Evaporative Emission System Leak Detection Pump Control Circuit High
- P2404Evaporative Emission System Leak Detection Pump Sense Circuit Range/Performance
- P2407Evaporative Emission System Leak Detection Pump Sense Circuit Intermittent/Erratic
- P2413Exhaust Gas Recirculation System Performance
- P2418Evaporative Emission System Switching Valve Control Circuit/Open
- P2419Evaporative Emission System Switching Valve Control Circuit Low
- P2422Evaporative Emission System Vent Valve Stuck Closed
- P2425Exhaust Gas Recirculation Cooling Valve Control Circuit/Open
- P242FDiesel Particulate Filter Restriction - Ash Accumulation (Bank 1)
- P2431Secondary Air Injection System Air Flow/Pressure Sensor Circuit Range/Performance (Bank 1)
- P2440Secondary Air Injection System Switching Valve Stuck Open (Bank 1)
- P2444Secondary Air Injection System Pump Stuck On (Bank 1)
- P2452Diesel Particulate Filter Pressure Sensor A Circuit
- P2453Diesel Particulate Filter Pressure Sensor A Circuit Range/Performance
- P2454Diesel Particulate Filter Pressure Sensor A Circuit Low
- P2455Diesel Particulate Filter Pressure Sensor A Circuit High
- P2457Exhaust Gas Recirculation Cooling System Performance
- P2458Diesel Particulate Filter Regeneration Duration
- P2459Diesel Particulate Filter Regeneration Frequency
- P2463Diesel Particulate Filter Restriction - Soot Accumulation (Bank 1)
P25xx — Auxiliary inputs and charging
The charging system, the low-pressure fuel sensor and the position sensor of the turbo's boost control: inputs that feed the engine control unit. Codes by part →
- P2500Generator Lamp/L-Terminal Circuit Low
- P2501Generator Lamp/L-Terminal Circuit High
- P2502Charging System Voltage
- P2503Charging System Voltage Low
- P2504Charging System Voltage High
- P2539Low Pressure Fuel System Sensor Circuit
- P2540Low Pressure Fuel System Sensor Circuit Range/Performance
- P2563Turbocharger Boost Control Position Sensor A Circuit Range/Performance
- P2564Turbocharger Boost Control Position Sensor A Circuit Low
- P2565Turbocharger Boost Control Position Sensor A Circuit High
P26xx — Control unit and auxiliary outputs
Internal functions of the engine control unit, such as its engine-off timer, and outputs it drives, such as the fuel pump or the valve lift actuators. Codes by part →
P27xx — Transmission
Automatic gearboxes: the friction elements, the pressure control solenoids and the torque converter clutch. Like P07xx codes, they often come with a limp mode. Codes by part →
- P2700Transmission Friction Element A Apply Time Range/Performance
- P2714Pressure Control Solenoid D Performance or Stuck Off
- P2716Pressure Control Solenoid D Electrical
- P2723Pressure Control Solenoid E Performance or Stuck Off
- P2763Torque Converter Clutch Pressure Control Solenoid Control Circuit High
- P2764Torque Converter Clutch Pressure Control Solenoid Control Circuit Low
- P2769Torque Converter Clutch Circuit Low
- P2770Torque Converter Clutch Circuit High
U00xx — Network wiring
The communication bus itself: the CAN network that links the control units, its wiring and its state. A fault here can silence several units at once. Codes by part →
U01xx — Lost communication
One control unit no longer hears another on the network: engine, gearbox, ABS, airbags, dashboard. The cause is often electrical — supply, ground, connector — rather than the silent unit itself. Codes by part →
- U0100Lost Communication With ECM/PCM A
- U0101Lost Communication With TCM
- U0102Lost Communication With Transfer Case Control Module
- U0121Lost Communication With Anti-Lock Brake System (ABS) Control Module
- U0122Lost Communication With Vehicle Dynamics Control Module
- U0126Lost Communication With Steering Angle Sensor Module
- U0131Lost Communication With Power Steering Control Module
- U0140Lost Communication With Body Control Module
- U0151Lost Communication With Restraints Control Module
- U0155Lost Communication With Instrument Panel Cluster (IPC) Control Module
- U0164Lost Communication With HVAC Control Module
- U0184Lost Communication With Radio
U04xx — Invalid data
A control unit still receives the messages of another, but their content is implausible or corrupted. The unit that sends them is the first suspect, together with its supply. Codes by part →