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P1780 Diagnostic Trouble Code Discussion for April 2006

Park/Neutral Position Switch Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1780
Help Request Posted
2001 Lexus IS300 3.0L MIL Lamp on VIN: JTHBD18271
P1780: Park/Neutral Position Switch Circuit Malfunction. ... with cel on and code P1780 stored for the gear selector switch. I checked the wiring from the switch to the ecm and all i found was a bad spot in the switch in park position. Replaced switch and now the car is back with the same code. The gear indicator on...
April 27, 2006