P2D3B
Hybrid/EV Discharge System Fault
The hybrid control module detects a fault in the active discharge system used to safely drain the DC-link capacitors after shutdown. Discharge resistor or switch may have failed.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Discharge resistor openCommon
- Discharge switch failedPossible
Parts involved
- Hv Discharge Resistor
- Discharge Switch
- Dc Link Capacitor
P2D3B is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.