P09xx fault codes: 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.

How to read this code

The letter P names the system: Powertrain. The next digit, 9, locates the fault: transmission and controls.

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

Automated gearbox actuators

• 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
• 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

Gearbox hydraulic pressure

• 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
• 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
• 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

Gearbox fluid temperature sensor

• 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

Gearbox pressure control solenoid

• 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

Gearbox shift solenoid

• 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
• P0997Shift Solenoid F Control Circuit Range/Performance
• P0998Shift Solenoid F Control Circuit Low
• P0999Shift Solenoid F Control Circuit High