P0A3D code meaning
Drive Motor B Inverter Over Temperature
Powertrain system Generic code P0Axx codes Check engine light
What P0A3D means
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.
P0A3D at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1 to 8 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0A3D
- Hybrid or EV system warning
- Reduced rear-axle drive power
- Fault appears after long climbs or high load
Common causes of P0A3D
- Most 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
- Less likelyInternal fault in the rear motor and inverter assembly
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Drive motor b inverter
What each part of P0A3D means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| A | Area: hybrid propulsion. |
| 3D | The exact fault in that area. |
What to do next
- Note P0A3D and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0A3D
What does P0A3D mean?
P0A3D means "Drive Motor B Inverter Over Temperature". P0A3D is the over-temperature code for the inverter feeding drive motor B. It is a generic code, so it means the same on every make.
Is it safe to drive with P0A3D?
Drive gently and only to a workshop. With P0A3D the car can go into limp mode (reduced power) to protect itself.
Will P0A3D fail an emissions test?
Yes, it can. P0A3D is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P0A3D to fix?
Difficulty: workshop only. A typical repair takes 1 to 8 hours of work. This is a job for a workshop.
Will P0A3D clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.