P1899

Tests 1890 - 1894:

Tests 1895 - 1898:

SYMPTOM
P-1899 P/N 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.

POSSIBLE CAUSES
- No possible causes remaining
- P/N switch wiring harness observable defect
- P/N switch sense circuit open
- P/N switch sense circuit short to ground
- Park/Neutral position switch defective
- Park/Neutral switch stuck
- Powertrain control module defective