Powertrain
generic / SAE
P0DB2
Hybrid/EV Battery Cell Balancing Circuit B Stuck Off
The cell balancing circuit B reports a stuck off condition. Cell-group voltage equalization may be impaired on this channel.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberD / B2
Possible causes
- Balancing transistor open high
- Driver IC failure medium
- Carbon or debris buildup preventing free movement low
Symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 400–3000 €
- Estimated time: 3–10 h
- Component: hv battery cell balancing circuit b
- Component: bms
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012