P2D3E
Cold Start Hybrid/EV Battery Performance
During cold start, the HV battery cannot deliver the expected power. Cold cell impedance reduces available current.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
Common causes
Ordered by how often each turns out to be the cause.
- Cell impedance high at coldCommon
- Battery heater not yet effectivePossible
- Pack cell imbalance approaching service thresholdLess likely
Parts involved
- Drive Motor A
- Inverter
- Hv Battery
P2D3E 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.