P0AFD
Hybrid/EV Battery Pack Temperature Too Low
The HV battery pack temperature is below the safe operating threshold. Power output severely reduced until heating completes.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
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.
- Extreme ambient coldCommon
- Battery heater failedPossible
- Pack cell imbalance approaching service thresholdLess likely
Parts involved
- Hv Battery
- Hv Battery Heater
P0AFD 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.