Park/Neutral Switch Failure (Sense Circuit)

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 Powertrain Control Module (PCM). When the transmission is in park or neutral, the park/neutral position switch sense circuit is grounded.

POSSIBLE CAUSES
- Connector terminals and/or wires
- Park/neutral switch failure
- Mechanical transmission problem
- PCM failure