P0936
Hydraulic Pressure Sensor Circuit Intermittent
- Severity
- High
- Driving
- Drive only to a garage
The hydraulic pressure signal is dropping out intermittently. Gear changes work most of the time and occasionally fail. As with all intermittent circuit faults, connections are more likely than components - but a genuinely fluctuating pressure will produce the same code.
Possible causes
- CommonLoose or corroded connector pin at the hydraulic unit
- CommonChafed or fatigued wiring
- CommonGenuinely fluctuating pressure from a small leak
- PossibleSensor dropping out when hot
- PossibleFluid contamination in the connector
What you might notice
- Occasional failure to change gear
- Pump cycling irregularly
- Transmission warning message coming and going
- Check engine light intermittent
What to check, in order
- Watch the pressure reading through several pump cycles. Genuine fluctuation looks different from an electrical dropout - the reading falls smoothly rather than jumping.
- Check the fluid level and look for a slow leak.
- Wiggle-test the harness at the hydraulic unit.
- Inspect the connector for a backed-out pin and for fluid contamination.
- Record the freeze frame data if the tool supports it.
Read this code from your own car
Plug an ELM327 adapter into the OBD-II port under the dashboard. Pin16 reads every stored, pending and permanent code, explains each one like this page does — offline, with no account — and shows what the car recorded when the fault was set.
Where this code sits
P00xxP01xxP02xxP03xxP04xxP05xxP06xxP07xxP08xxP09xxP0AxxP0BxxP0CxxP0DxxP0ExxP0FxxP10xxP11xxP12xxP13xxP14xxP15xxP16xxP17xxP18xxP19xxP1AxxP1BxxP1CxxP1DxxP1ExxP1FxxP20xxP21xxP22xxP23xxP24xxP25xxP26xxP27xxP28xxP29xxP2AxxP2BxxP2CxxP2DxxP2ExxP2FxxP30xxP31xxP32xxP33xxP34xxP35xxP36xxP37xxP38xxP39xxP3AxxP3BxxP3CxxP3DxxP3ExxP3Fxx
Transmission and control modules
P0900P0901P0902P0903P0904P0905P0906P0907P0908P0909P0910P0911P0912P0913P0914P0915P0916P0917P0918P0919P0920P0921P0922P0923P0924P0925P0926P0927P0928P0929P0930P0931P0932P0933P0934P0935P0936P0937P0938P0939P0940P0941P0942P0943P0944P0945P0946P0947P0948P0949P0950P0951P0952P0953P0954P0955P0956P0957P0958P0959P0960P0961P0962P0963P0964P0965P0966P0967P0968P0969P0970P0971P0972P0973P0974P0975P0976P0977P0978P0979P0980P0981P0982P0983P0984P0985P0986P0987P0988P0989P0990P0991P0992P0993P0994P0995P0996P0997P0998P0999