P1899

Test 1 - 3:

Test 4 - 5:

SYMPTOM
P1899-TRS PERFORMANCE

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
- DRBIII displays P/N & D/R in wrong position
- TRS T41 sense (P/N sense) circuit open
- TRS T41 sense (P/N sense) circuit shorted to ground
- TRS assembly (P/N switch)
- PCM