P0A23Generator Torque Sensor Circuit Range/Performance
- 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
- The generator torque sensor sends an electrically valid voltage, but the torque it reports does not fit the generator current, speed and engine load the control unit knows. Typical checks compare the measured value with a torque model or look for an offset while the generator is idle. Such a sensor can sit in the hollow generator shaft, as a Honda patent claims, where magnetic noise and ageing shift the reading. No manufacturer documents P0A23 publicly; CARB requires approved monitoring of generator faults. Pure wiring faults appear as P0A22, P0A24 or P0A25. The system tends to cap generator torque.
- What you may notice
- Hybrid system warning light
- Generator output limited, battery charges slowly
- Likely causes
- LikelySensor zero point or gain drifted
- PossibleElectromagnetic interference from the generator or inverter
- RareContact resistance in the connector skewing the signal
- 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.