The computer sees a wrong or missing signal for the gear selector position. The driver may notice a no-start in park, wrong gear display or odd shifts.
Likely causes, most common first
- Faulty range sensor
- Misadjusted selector cable or sensor
- Damaged wiring or connector
- Water in the connector
Parts usually involved
- Transmission range sensor
- Selector cable
- Sensor connector
Test before you replace
Watch the selector position live on a scan tool through each position and check the sensor adjustment.
General guidance for generic OBD2 codes. Always follow the maker's procedure for the car in front of you.