P1780high severityPowertrain
Park/Neutral Position Switch Malfunction
on 2012 Toyota Matrix 2.4L I4 · FWD
What this code means
The ECM/TCM detected a fault in the PNP switch signal.
Symptoms
- CEL
- No start in Park/Neutral
- Wrong gear indication
- Backup lights malfunction
Common causes
- Faulty PNP switch
- Misadjusted switch
- Damaged wiring
- Corroded contacts
Diagnostic steps
- Test switch operation
- Adjust switch
- Inspect wiring
- Check connector
Repair notes
Replace or adjust PNP switch.
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