KlaroFault codes › P01xx
P01xx fault codes: 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.
How to read this code
The letter P names the system: Powertrain. The next digit, 1, locates the fault: fuel and air metering.
These codes are generic: they mean the same thing on every make. Some manufacturer tools display them with a two-digit suffix, such as P0101-00 or P010100: the suffix refines the fault type, and the base code keeps its meaning.
The codes of this family, part by part
Mass airflow sensor (airflow meter)
- 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
Manifold pressure sensor (MAP)
- 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
Intake air temperature sensor
- 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
Coolant temperature sensor
- 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
- P0125Insufficient Coolant Temperature for Closed Loop Fuel Control
- P0126Insufficient Coolant Temperature for Stable Operation
Throttle and accelerator pedal position sensors
- 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
Oxygen sensor (lambda sensor)
- 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)
- 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)
- 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)
- 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)
- 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)
- 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)
Oxygen sensor heater
- P0135O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
- P0141O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
- P0147O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 3)
- P0155O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)
- P0161O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)
- P0167O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 3)
Mixture regulation (fuel trim)
- 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)
Fuel composition (ethanol) sensor
- P0176Fuel Composition Sensor Circuit Malfunction
- P0177Fuel Composition Sensor Circuit Range/Performance
- P0178Fuel Composition Sensor Circuit Low Input
- P0179Fuel Composition Sensor Circuit High Input
Fuel temperature sensor
- 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
Fuel rail pressure sensor
- 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