P0A4DGenerator Position Sensor Circuit Low
- 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
- P0A4D reports a generator resolver signal stuck below its permitted range, as caused by a sine, cosine or excitation line shorted to ground or a winding short. No manufacturer documents this code publicly. Mitsubishi shows how the fault is judged but files it under its own codes: on the 2023 Outlander PHEV a sine or cosine voltage at or below 2.0 V for 0.21 s sets P0C66 or P0C6B instead of P0A4D. A Bosch patent describes distinguishing a short to ground from a short to supply by the offset of the receiver coil lines, which is the basis for low/high splitting. CARB requires such circuit checks for hybrid input components. P0A4E is the high side, P0A4B the general circuit fault, P0A4C plausibility. The hybrid system typically shuts the generator down and warns the driver.
- What you may notice
- Hybrid system warning and MIL
- Generator disabled, engine-only or no-start condition
- Likely causes
- LikelySine, cosine or excitation line shorted to ground
- PossibleMoisture or corrosion in the resolver connector
- RareShorted resolver winding inside the generator
- 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 – €3,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.