P0A3EGenerator Inverter Over Temperature
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0A3E reports that the inverter controlling the hybrid generator is too hot. Mitsubishi sets it on the 2023 Outlander PHEV when the generator control unit reads 156 °C or more at the U-phase IGBT for 0.12 s; the other switches report via P30AD to P30B1. Its hints are the power drive unit, the EV water cooling circuit and the radiator fan. Honda lists P0A3E among the PCU overheating codes on the 2023-25 Accord Hybrid and 2025-26 Civic Hybrid, where road debris can puncture the PCU radiator because the original guard is too weak. P0A3B is the generator's own over-temperature, P0A3C and P0A3D cover the motor inverters. Output is restricted, so charging and power drop and further warnings may follow.
- What you may notice
- Several hybrid warning lights at once
- Reduced hybrid system performance
- Coolant loss or visible damage at the front radiator area
- Likely causes
- LikelyPCU radiator punctured or leaking after road debris (Honda Accord/Civic Hybrid)
- PossibleLow coolant or failed electric pump in the inverter cooling circuit
- PossibleRadiator fan not running
- RareInternal fault 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: €150 – €5,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.