P1899

Test 1 - 3:

Test 4 - 7:

SYMPTOM
P1899 - P/N SWITCH STUCK IN PARK OR IN GEAR (4SP AUTO TRNAS)

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. Two trip fault.

POSSIBLE CAUSES
- Intermittent park/neutral switch
- (T41) P/N position switch sense circuit shorted to ground
- (T41) P/N position switch sense circuit open
- Transmission range sensor
- Powertrain control module