P0801 – Reverse Inhibit Control Circuit
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Symptoms
- Harsh shifting
- Reverse not engaging
- Poor acceleration
- Limp mode
- Check engine light
Causes
- Faulty inhibit solenoid
- Damaged wiring
- Loose connector
- TCM issue
- ECU issue
Diagnosis
- Inspect wiring
- Test inhibit solenoid
- Check connectors
- Scan live data
- Inspect TCM
Repair
- Replace inhibit solenoid
- Repair wiring
- Fix connectors
- Replace TCM
- Update ECU