Join Now
International Automotive Technicians Network

P1780 Diagnostic Trouble Code Discussion for July 2006

Park/Neutral Position Switch Circuit Malfunction


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P1780
Help Request Posted
1996 Toyota T100 SR5 3.4L Hesitation, Surge, Cuts out, MIL Lamp on VIN: JT4UN24D6T
P1780: Park/Neutral Position Switch Circuit Malfunction. Hello Toyota experts, This T100 is driving me insane. It wants to shut down at 2500 RPM regardless of engine load. Almost feels like a rev limiter but never in Park or Neutral, only while driving. Fuel pressure is within specs (40 PSI). The speedometer is inop...
July 19, 2006
1996 Toyota T100 SR5 3.4L Hesitation, Surge, Cuts out, MIL Lamp on VIN: JT4UN24D6T
P1780: Park/Neutral Position Switch Circuit Malfunction. Hello Toyota experts, This T100 is driving me insane. It wants to shut down at 2500 RPM regardless of engine load. Almost feels like a rev limiter but never in Park or Neutral, only while driving. Fuel pressure is within specs (40 PSI). The speedometer is inop...
July 19, 2006