OBD
P2D3B
Hybrid/EV Discharge System Fault
What it means
P2D3B means Hybrid/EV Discharge System Fault.
Check these first
- A failed high voltage discharge resistor or circuit
- A discharge contactor that is not closing
- Damaged high voltage discharge wiring
- A faulty inverter discharge control
- High voltage still present after shutdown
What to do next
- Do not open the high voltage system without training
- Scan the inverter for discharge circuit codes
- Inspect the high voltage discharge wiring
- Test the discharge resistor
- Repair the discharge circuit
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.