P0850 – Park/Neutral Switch Input Circuit
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Symptoms
- No start
- Incorrect gear display
- Harsh shifting
- Poor acceleration
- Check engine light
Causes
- Faulty neutral switch
- Damaged wiring
- Loose connector
- Shifter issue
- ECU issue
Diagnosis
- Inspect wiring
- Test neutral switch
- Check connectors
- Scan live data
- Inspect shifter
Repair
- Replace neutral switch
- Repair wiring
- Fix connectors
- Adjust shifter
- Update ECU