P1899 Park/Neutral Switch Stuck In Park or Gear
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P-1899 PARK/NEUTRAL SWITCH STUCK IN PARK OR 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.
POSSIBLE CAUSES
- P/N switch sense circuit open (with EATX)
- Park/Neutral switch sense circuit short to ground
- Park/Neutral switch wiring harness observable defect
- TRS defective
- PCM def (P/N switch)