P0C66Generator Position Sensor Circuit A Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0C66 means the signal of circuit A of the generator resolver has dropped below its lower limit. Mitsubishi uses it on the 2023 Outlander PHEV for the sine winding: the generator control unit, supplied with at least 8 V, watches the line continuously and sets the code when the sine voltage stays at or below 2.000 V for 0.21 s. A short to ground on a sine lead or a damaged winding are the classic causes; a Bosch patent shows that the averaged potential of the coil lines reveals whether a lead touches ground or supply. Mitsubishi first checks for radiator fan codes and tests the resolver circuit, and replaces the power drive unit, or later the generator, only if the code comes back. P0C67 is the high counterpart, P0C6B the same test on the cosine side.
- What you may notice
- Malfunction indicator lamp and hybrid warning shortly after switching on
- Generator out of service, no charging by the engine
- Reduced driving power
- Likely causes
- LikelySine lead of the resolver shorted to ground or to the housing
- PossibleShorted or damaged sine winding in the generator resolver
- PossibleFaulty input stage in the power drive unit (generator control unit)
- RareDamaged or contaminated resolver connector pins
- 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 – €6,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.