P0824Gear Lever Y Position Sensor 1 Circuit Intermittent/Erratic
- Generic OBD-II code · Powertrain
- Can trigger limp mode
- How the car detects it
- Gear lever X and Y position sensors detect a selector's position in two directions: on an H-gate shift and select direction (a LuK patent uses two sensors about 90° apart), on a shift-by-wire lever its two axes. P0820 covers the whole X-Y circuit, P0821–P0824 and P082A–P082F sensor 1, P089A–P08A3 a redundant sensor 2. P0824 is the same for the Y axis: short dropouts or jumps of Y sensor 1. GM folds Y-axis disturbances into P082D; thresholds for P0824 are not published anywhere. The symptoms are an occasional warning, a gate change that is sometimes not recognized, and occasional limp mode.
- What you may notice
- Occasional transmission warning
- Gate change occasionally not recognized
- Occasional limp mode
- Likely causes
- LikelyLoose contact at the selector connector
- PossibleChafed or broken wire in the harness to the console
- PossibleSensor worn (potentiometer track) or Hall sensor disturbed
- RareInterference or ground fault
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.