P1780 OBD Trouble Code

1 result found

P1780 - GM
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description

Park Neutral Position Switch Circuit (MS74-Speed Transaxle)

Cause

Engine running with an engine speed change from below 300 rpm to over 500 with the VSS input at 0 mph and the PNP switch signal open (R, D, 2 or L gear positions), or a PNP switch closed (P/N position) input was detected for 10 seconds with the engine is running at over 2500 RPM and over a 38 5% calculated load value

Try also: https://www.obd-codes.com/p1780