P0DAA
Battery Charging System Isolation Fault
The BMS detects an isolation fault in the battery charging system. HV insulation between charging path and chassis is degraded.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Charging cable insulation chafedCommon
- Moisture in charging connectorPossible
Parts involved
- Battery Charger
- Hv Charging Cable
- Isolation Monitor
P0DAA 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.