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P1780

Park/Neutral Position Switch Malfunction

2012-2012 Lexus LFA 4.8L V10 πŸ‡¨πŸ‡¦

High SeverityPowertrain

Description

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

  1. Test switch operation
  2. Adjust switch
  3. Inspect wiring
  4. Check connector

Repair Notes

Replace or adjust PNP switch.

Other Powertrain Codes

P1780 on Other Vehicles

Common Questions

What does code P1780 mean on a 2012-2012 Lexus LFA?

P1780 stands for "Park/Neutral Position Switch Malfunction". The ECM/TCM detected a fault in the PNP switch signal.

What are the symptoms of P1780 on a Lexus LFA?

Common symptoms of P1780 include: CEL, No start in Park/Neutral, Wrong gear indication, Backup lights malfunction.

What causes P1780 on a 2012-2012 Lexus LFA?

Common causes of P1780 include: Faulty PNP switch, Misadjusted switch, Damaged wiring, Corroded contacts.

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