P1899

Tests 933 - 938:

Test 939:

SYMPTOM
P1899 - PARK/NEUTRAL SWITCH STUCK IN PARK OR IN GEAR

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
- Intermittent Park/Neutral switch
- Park/Neutral position switch defective
- Park/Neutral switch sense circuit shorted to ground
- Park/Neutral switch sense circuit open
- Powertrain control module defective