P0A2EDrive Motor A Temperature Sensor A Circuit Intermittent
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P0A2E flags short jumps or dropouts in the motor A temperature signal that are too brief or too erratic for the low/high checks. Bentley documents it for the Bentayga PHEV and Flying Spur Hybrid 2020-23: the resistance in the sensor crimp changes suddenly at high temperature, and only the sensor has to be replaced, although the engine and gearbox come out to reach it. Audi lists it on the 2021-22 A7 e quattro together with P0A4000 and/or P0A2B00, caused by contact wear in a coupling connector, fixed with new gold-plated pins. Siblings: P0A2C/P0A2D for a steady out-of-range signal, P2DB0 for sensor B. The car shows a MIL or HV warning and may limit electric drive.
- What you may notice
- Check engine light or high-voltage warning in the cluster
- Fault comes and goes, often after hard driving
- Gearbox or electric drive warning on some models
- Likely causes
- LikelyWorn contacts in a coupling connector of the sensor line (Audi A7 e quattro)
- PossibleResistance jumps in the sensor crimp at high temperature (Bentley hybrids)
- RareChafed or loosely routed sensor wire with intermittent contact
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €200 – €5,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.