P0A22Generator Torque Sensor Circuit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- In series or power-split hybrids a separate electric machine runs as generator, driven by the combustion engine. A Honda patent claims a torque sensor inside the hollow shaft of either the traction motor or this generator. P0A22 is the general circuit fault of the generator torque sensor: the control unit receives no usable signal at all, without a more specific low, high or intermittent pattern. No manufacturer documents P0A22 publicly; CARB requires an approved monitoring plan for the generator system. Related: P0A23 plausibility, P0A24 low, P0A25 high, P0A26 intermittent. Charging and engine-driven power generation may be limited.
- What you may notice
- Hybrid system warning light
- Reduced battery charging by the engine
- Limited system power
- Likely causes
- LikelySensor connector at the generator unplugged, loose or corroded
- PossibleOpen circuit in the sensor harness
- PossibleGenerator torque sensor or its electronics failed
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €100 – €3,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.