Reverse Input Circuit
Table of contents
P0812 Possible Causes
- Faulty Reverse Input Switch
- Reverse Input Switch harness is open or shorted
- Reverse Input Switch circuit poor electrical connection
How do I fix code P0812?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P0812 code
The cost of diagnosing the P0812 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0812 Description
The Transmission Control Module (TCM) monitors the Reverse Switch Input signal. The TCM sets the OBDII code when the Reverse Switch Input is not to factory specifications.