P1899

Tests 1 - 2:

Tests 3 - 7:

Tests 8 - 12:

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

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 in two consecutive failures.

POSSIBLE CAUSES
- Park/Neutral switch sense circuit open
- Park/Neutral switch sense circuit shorted to ground
- Park/Neutral switch wiring harness observable defect
- Park/Neutral switch defective
- TRS defective
- PCM defective (Park/Neutral switch)