P0850

Test 1 - Test 2:

Test 3 - Test 5:

SYMPTOM
P0850-PARK/NEUTRAL SWITCH PERFORMANCE

WHEN MONITORED
Continuously with the transmission in Park, Neutral, or Drive and NOT in Limp-in mode.

SET CONDITION
This code will set if the PCM detects an incorrect Park/Neutral switch state for a given mode of vehicle operation.

POSSIBLE CAUSES
- DRB displays P/N & D/R not in correct position
- TRS T41 sense (P/N SENSE) circuit open
- TRS T41 sense (P/N SENSE) circuit shorted to ground
- Transmission range sensor
- PCM