Powertrain, generic · Hybrid propulsion

P0A3E Generator Inverter Over Temperature

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

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.

Likely causes

PCU radiator punctured or leaking after road debris (Honda Accord/Civic Hybrid)
Low coolant or failed electric pump in the inverter cooling circuit
Radiator fan not running
Internal fault in the power drive unit

Symptoms

  • Several hybrid warning lights at once
  • Reduced hybrid system performance
  • Coolant loss or visible damage at the front radiator area

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€150–5,000
Time1–8 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

generator inverter

Related codes

P0A3BP0A3CP0A3DP0BCCP0BCF

References: mitsubishitechinfo.com, static.nhtsa.gov, static.nhtsa.gov.