P1899

Tests 1 - 3:

Tests 4 - 7:

SYMPTOM
P1899-P/N SWITCH STUCK IN PARK OR IN GEAR

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
- Transmission Range Sensor
- Powertrain Control Module