OBD-II code · Powertrain (generic)
P0820 Gear Lever X-Y Position Sensor Circuit
The TCM detects an out-of-range or implausible signal from the gear lever X-Y position sensor used on shift-by-wire transmissions.
Is it safe to drive with P0820?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyPosition sensor failed
- PossibleShifter mechanism worn
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Gear Lever Position Sensor, Shifter Assembly, Wiring Harness
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.