Block of codes
P09xx codes: transmission
This block brings together the codes from P0900 to P0986 in the glossary. Open yours to see what it means, its causes and whether you can keep driving.
Reviewed by Daniel Morales, founder of Reprorace SL, on
What this block covers
Transmission
The gearbox, especially automatic ones: its sensors, solenoids and torque converter. A fault may lock it in one gear (limp-home mode) or cause harsh shifts.
Engine (mechanical, cooling and lubrication)
The engine's mechanics, timing (camshaft and crankshaft), cooling and lubrication. Many of these codes check that the engine is in time and at the right temperature.
The 90 codes of the block
- P0900Clutch A actuator, control circuit open
- P0901Clutch A actuator, control circuit: range/performance
- P0902Clutch A actuator, control circuit: signal low
- P0903Clutch A actuator, control circuit: signal high
- P0904Gate select, position circuit A: malfunction
- P0905Gate select, position circuit A: range/performance
- P0906Gate select, position circuit A: signal low
- P0907Gate select, position circuit A: signal high
- P0908Gate select, position circuit A: intermittent
- P0909Gate select control: error
- P0910Gate select actuator, circuit open
- P0911Gate select actuator, circuit: range/performance
- P0912Gate select actuator, circuit: signal low
- P0913Gate select actuator, circuit: signal high
- P0914Gear shift, position circuit A: malfunction
- P0915Gear shift, position circuit A: range/performance
- P0916Gear shift, position circuit A: signal low
- P0917Gear shift, position circuit A: signal high
- P0918Gear shift, position circuit A: intermittent
- P0919Gear shift position control: error
- P0920Gear shift forward actuator, circuit open
- P0921Gear shift forward actuator, circuit: range/performance
- P0922Gear shift forward actuator, circuit: signal low
- P0923Gear shift forward actuator, circuit: signal high
- P0924Gear shift reverse actuator, circuit open
- P0925Gear shift reverse actuator, circuit: range/performance
- P0926Gear shift reverse actuator, circuit: signal low
- P0927Gear shift reverse actuator, circuit: signal high
- P0928Gear shift lock solenoid/actuator, control circuit: open circuit
- P0929Gear shift lock solenoid/actuator, control circuit A: range/performance
- P092AGear shift lock solenoid/actuator, control circuit B open
- P092BGear shift lock solenoid/actuator, control circuit B: range/performance
- P092CGear shift lock solenoid/actuator, control circuit B: signal low
- P092DGear shift lock solenoid/actuator, control circuit B: signal high
- P0930Gear shift lock solenoid/actuator, control circuit A: signal low
- P0931Gear shift lock solenoid/actuator, control circuit A: signal high
- P0932Hydraulic pressure sensor, circuit: malfunction
- P0933Hydraulic pressure sensor: range/performance
- P0934Hydraulic pressure sensor, circuit: signal low
- P0935Hydraulic pressure sensor, circuit: signal high
- P0936Hydraulic pressure sensor, circuit: intermittent
- P0937Hydraulic oil temperature sensor, circuit: malfunction
- P0938Hydraulic oil temperature sensor: range/performance
- P0939Hydraulic oil temperature sensor, circuit: signal low
- P0940Hydraulic oil temperature sensor, circuit: signal high
- P0941Hydraulic oil temperature sensor, circuit: intermittent
- P0942Hydraulic pressure unit: malfunction
- P0943Hydraulic pressure unit cycling period: too short
- P0944Hydraulic pressure unit: loss of pressure
- P0945Hydraulic pump relay/control, circuit open
- P0946Hydraulic pump relay/control, circuit: range/performance
- P0947Hydraulic pump relay/control, circuit: signal low
- P0948Hydraulic pump relay/control, circuit: signal high
- P0950Auto shift manual, control circuit: malfunction
- P0951Auto shift manual, control circuit: range/performance
- P0952Auto shift manual, control circuit: signal low
- P0953Auto shift manual, control circuit: signal high
- P0954Auto shift manual, control circuit: intermittent
- P0955Auto shift manual mode, circuit: malfunction
- P0956Auto shift manual mode, circuit: range/performance
- P0957Auto shift manual mode, circuit: signal low
- P0958Auto shift manual mode, circuit: signal high
- P0959Auto shift manual mode, circuit: intermittent
- P0960Pressure control solenoid A, control circuit open
- P0961Pressure control solenoid A, control circuit: range/performance
- P0962Pressure control solenoid A, control circuit: signal low
- P0963Pressure control solenoid A, control circuit: signal high
- P0964Pressure control solenoid B, control circuit open
- P0965Pressure control solenoid B, control circuit: range/performance
- P0966Pressure control solenoid B, control circuit: signal low
- P0967Pressure control solenoid B, control circuit: signal high
- P0968Pressure control solenoid C, control circuit open
- P0969Pressure control solenoid C, control circuit: range/performance
- P0970Pressure control solenoid C, control circuit: signal low
- P0971Pressure control solenoid C, control circuit: signal high
- P0972Shift solenoid A, control circuit: range/performance
- P0973Shift solenoid A, control circuit: signal low
- P0974Shift solenoid A, control circuit: signal high
- P0975Shift solenoid B, control circuit: range/performance
- P0976Shift solenoid B, control circuit: signal low
- P0977Shift solenoid B, control circuit: signal high
- P0978Shift solenoid C, control circuit: range/performance
- P0979Shift solenoid C, control circuit: signal low
- P0980Shift solenoid C, control circuit: signal high
- P0981Shift solenoid D, control circuit: range/performance
- P0982Shift solenoid D, control circuit: signal low
- P0983Shift solenoid D, control circuit: signal high
- P0984Shift solenoid E, control circuit: range/performance
- P0985Shift solenoid E, control circuit: signal low
- P0986Shift solenoid E, control circuit: signal high
Other blocks
Read your car's fault codes on your phone
With an ECO-LITE in the OBD socket you see the codes in your account, with the data captured when the fault happened, and your workshop can check them remotely, always with your permission.
Keep reading
- OBD fault codes: what each one means
- Check engine light on: what to do
- How to read and clear your car's fault codes
- Will your car pass its MOT or inspection with the engine light on?
- Wi-Fi OBD2 reader: which one to choose
- Reading fault codes by car make
- Remote OBD diagnostics: what it is, how it works and what it can't do
- Vehicle diagnostics glossary