P0820Gear Lever X-Y Position Sensor Circuit
- 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. P0820 is the umbrella code: the module does not tell X from Y, or sees an invalid combination of both axes that matches no gate position. The only documented user is Mitsubishi's 2022 Outlander PHEV, which names it 'shift lever position (main) circuit malfunction' and sets it for an impossible lever position, without published thresholds. GM reads its X/Y sensors under P082A–P082F instead. Range selection may be blocked and the vehicle stays in P or N.
- What you may notice
- Range cannot be selected or only partly
- Vehicle stays in P or N, or limp mode
- Transmission warning, range display flashes or missing
- Likely causes
- LikelyWire or connector between selector and module open or shorted
- LikelyPosition sensor in the selector assembly faulty
- PossibleSensor supply (5 V reference) or ground faulty
- RareTransmission, hybrid or selector module
- Repair
- Medium · Usually a job for a workshop.Typical cost: €100 – €800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.