P0A6FGenerator Phase U Current
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0A6F is the general fault code for the phase U current of the hybrid generator, the motor-generator that is mainly driven by the engine, starts it and charges the battery, such as Toyota's MG1 or Hyundai's hybrid starter-generator. No manufacturer documents P0A6F publicly; Toyota's published field reports show generator codes for phases V and W only. A Hyundai patent describes an inverter that senses two or three generator phase currents through its own sensors, separate from those of the drive motor. CARB requires monitoring of electric drive components. P0A70 and P0A71 are the low and high variants, P0A72 and P0A75 phases V and W, P0A59 the generator current sensor circuit. Without the generator, engine start and charging may fail.
- What you may notice
- Hybrid system warning and MIL
- Engine cannot be started electrically or battery is no longer charged
- Likely causes
- LikelyGenerator phase U current sensor failed
- PossibleFault in the generator section of the inverter assembly
- RareGenerator phase U cable or terminal faulty
- 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: €300 – €6,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.