P0A38Generator Temperature Sensor Circuit 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
- P0A38 means the generator temperature signal has fallen below the range a healthy sensor can produce. Mitsubishi sets it on the 2023 Outlander PHEV when the voltage of the generator W-phase coil sensor is 0.1 V or less for at least 0.5 s while the generator control unit has at least 8 V supply. Such a low voltage usually comes from a signal wire shorted to ground or a shorted sensor; Mitsubishi lists the power drive unit, the generator coil sensor and damaged wiring or connectors as suspects. P0A39 is the matching high fault, P0A37 the plausibility check and P0A3B a genuine over-temperature. Mitsubishi is the only manufacturer found that documents P0A38. Expect a hybrid warning and restricted generator use.
- What you may notice
- Hybrid warning or check engine light
- Generator temperature shows an implausibly high fixed value
- Battery charging by the engine restricted
- Likely causes
- LikelySensor signal wire shorted to ground
- PossibleGenerator coil sensor shorted internally
- PossibleDamaged connector or harness between generator and power drive unit
- RareFaulty sensor input in the power drive unit
- 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.