P1780high severityPowertrain
Park/Neutral Position Switch Malfunction
on 1996 Lexus LS 400 4.0L V8 · RWD
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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P0002
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P0010
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P0011
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P0013
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P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1