Park Neutral Position Switch Circuit
Table of contents
P1780 CHEVROLET Possible Causes
- Faulty Park Neutral Position Switch
- Park Neutral Position Switch harness is open or shorted
- Park Neutral Position Switch circuit poor electrical connection
How do I fix code P1780 CHEVROLET?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P1780 CHEVROLET code
The cost of diagnosing the P1780 CHEVROLET code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1780 CHEVROLET Description
With the engine running with an engine speed change from below 300 rpm to over 500 with the VSS input at 0 mph and the Park Neutral Position (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.