OBD
P0A3D
Drive Motor B Inverter Over Temperature
What it means
P0A3D means Drive Motor B Inverter Over Temperature.
Check these first
- Blocked inverter cooling vents
- A failed inverter coolant pump
- Low inverter coolant level
- High load or high ambient heat
- A failed inverter temperature sensor
What to do next
- Check inverter coolant level
- Inspect the inverter coolant pump
- Clear any blocked inverter cooling vents
- Read inverter temperature live data
- Service the inverter cooling system if it stays hot
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.