P0A3DDrive Motor B 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
- P0A3D is the over-temperature code for the inverter feeding drive motor B. On the 2023 Outlander PHEV this is the rear motor control unit, and Mitsubishi sets the code when its IGBT temperature is 156 °C or higher for one second. Mitsubishi's hints list the rear motor assembly, the electric water pump driven by the PHEV-ECU, the EV coolant circuit and the radiator fan, so cooling problems come before electronics. No other manufacturer documents P0A3D publicly; CARB 1968.2 requires monitoring of hybrid components that affect emissions. P0A35 is the over-temperature of motor B itself, P0C14 to P0C16 phase-specific inverter codes and P0A79 the general inverter performance code. Rear drive power is reduced until the inverter cools down.
- What you may notice
- Hybrid or EV system warning
- Reduced rear-axle drive power
- Fault appears after long climbs or high load
- Likely causes
- LikelyElectric water pump of the EV cooling circuit failed
- PossibleLow coolant or air in the EV cooling circuit
- PossibleRadiator fan not running or radiator blocked
- RareInternal fault in the rear motor and inverter assembly
- 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 – €5,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.