Powertrain
generic / SAE
P0BBE
Hybrid/EV Battery Pack Voltage Variation
The BMS detects excessive variation between cell-group voltages within the HV battery pack. Cell imbalance beyond compensation.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberB / BE
Possible causes
- Cell capacity imbalance high
- Cell balancing function failed medium
- Ground point with elevated resistance 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: 800–6000 €
- Estimated time: 4–18 h
- Component: hv battery pack
- Component: bms
- MIL / check engine light
- drive cycle required
- limp mode possible
Sources
References
sae:J2012