3 Speed Automatic Transmission

Tests 1 - 3:

Tests 4 - 7:

SYMPTOM
P1899-P/N SWITCH STUCK IN PARK OR IN GEAR (35P AUTO TRANS)

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
- Intermittent park/neutral switch
- P/N position switch sense circuit shorted to ground
- P/N position switch sense circuit open
- Park/neutral position switch
- Powertrain control module