P0A4FGenerator Position Sensor 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
- P0A4F flags a generator resolver signal that drops out or jumps briefly and then recovers, as opposed to a steady fault. No manufacturer documents P0A4F publicly. Mitsubishi and Volvo handle short interruptions inside the general circuit code instead: Volvo lists P0A4B in its inverter generator module with the fault type intermittent, and Mitsubishi tells technicians to treat a resolver fault that cannot be reproduced as an intermittent malfunction of harness and connectors. CARB requires circuit continuity checks on hybrid input components. Loose terminals, fretting contacts, a chafed cable near moving parts or heat-related cracks are the usual suspects. P0A4B is the steady circuit fault, P0A4C plausibility, P0A4D/P0A4E low and high. Symptoms come and go, often with a brief loss of hybrid function.
- What you may notice
- Hybrid warning that appears and clears again
- Short loss of electric drive or jerky power delivery
- Fault often linked to bumps or heat
- Likely causes
- LikelyLoose or fretting terminals in the resolver connectors
- PossibleChafed resolver cable that breaks contact under vibration
- RareHeat-related cracks in wiring or solder joints
- 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: €100 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.