P08A2Gear Lever Y Position Sensor 2 Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- Y sensor 2 is the backup Hall sensor of an electronic selector lever and reports the lever's Y-axis travel as a PWM duty cycle. GM uses P08A2 in its electronic range selection and sets it when the duty cycle of Y sensor 2 rises above 88 % (2019 ECM and ICCM tables) or above 95 % (Cadillac XT4 2019, ECM tables 2023–2025); 3 failures in 4 samples at 25 ms, in later calibrations 10 of 12. A signal line shorted to voltage, an open ground or an internal sensor fault are the usual reasons. Type B, MIL after two trips. Range/performance and low are P08A0 and P08A1; sensor 1 of the same axis reports via P082D to P082F. With one sensor still valid, the lever stays usable.
- What you may notice
- Check engine light after two drives
- Shifter warning message in the cluster
- Range selection normally still works via sensor 1
- Likely causes
- LikelySensor 2 signal wire shorted to supply voltage
- PossibleSensor ground open or high resistance
- PossibleInternal fault of sensor 2 in the selector assembly
- Repair
- Medium · Usually a job for a workshop.Typical cost: €100 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.