Chevrolet P1520: Park Neutral Position Switch Circuit Malfunction
Is your scanner showing Chevrolet P1520?
No worries. We'll show you what it means and how to deal with it.
Chevrolet P1520: Park Neutral Position Switch Circuit Malfunction
OVERVIEWWhat Does The Chevrolet P1520 Code Mean?
Engine started; and the PCM detected an unexpected high voltage condition on the PNP Switch circuit for three consecutive startups, or with Transaxle in 3rd or 4th gear, TCC in lockup, it detected a low voltage signal for 1 second.
What Are The Potential Causes Of The Chevrolet P1520 Code?
- PNP switch signal circuit is open or shorted to ground
- PNP switch ground circuit is open
- PNP switch is out-of-adjustment, loose or damaged
- PCM has failed
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
GM, 2013, Service Bullettin – Prior To Any Circuit Testing.
