P/N Switch Stuck In Park or In Gear (OBD II)

Name of Code:
Park/Neutral Switch Failure (Sense Circuit)

When Monitored:
With the transmission in park, neutral, or drive and not in limp-in mode.

Set Condition:
This code is set if the PCM detects an incorrect park/neutral switch state for a given mode of vehicle operation.

Theory of Operation:
The park/neutral position switch is used to communicate whether or not the transmission is in park or neutral to the PCM. When the transmission is in park or neutral, the park/neutral position switch sense circuit is grounded.

Probable causes:
- Connector terminals and/or wires
- Park/neutral switch failure
- Mechanical transmission problem
- PCM failure