Error code
OBD2 P0812
OBD2P0812
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Reverse Input Circuit.
Severity
moderateCan drive, but shifting into reverse may be problematic.
Summary
P0812 indicates an issue with the reverse gear input circuit, which is part of the transmission control system.
Common Causes
- Wiring issues
- Poor connection in the circuit
- Faulty ECM/PCM or TCM
Fixes
FAQ
What does P0812 mean?
P0812 indicates a malfunction in the reverse gear input circuit, which is part of the transmission control system.
How do I fix P0812?
Fixing P0812 typically involves checking and repairing wiring issues or replacing faulty components like the ECM/PCM or TCM. Professional diagnosis may be necessary to identify the exact cause.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
More OBD2 codes
- P0800Transfer Case Control System (MIL Request)
- P0801Reverse Inhibit Control Circuit
- P0802Transmission Control System MIL Request Circuit/Open
- P08031-4 Upshift (Skip Shift) Solenoid Control Circuit
- P08041-4 Upshift (Skip Shift) Lamp Control Circuit
- P0805Clutch Position Sensor Circuit
- P0806Clutch Position Sensor Circuit Range/Performance
- P0807Clutch Position Sensor Circuit Low
- P0808Clutch Position Sensor Circuit High
- P0809Clutch Position Sensor Circuit Intermittent
- P0810Clutch Position Control Error
- P0811Excessive Clutch Slippage