OBD-II code · Powertrain (generic)
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.
Is it safe to drive with P0DB2?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyBalancing transistor open
- PossibleDriver IC failure
- Less likelyCarbon or debris buildup preventing free movement
Symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 3–10 h
- Emissions test
- Usually unaffected
- Parts involved
- Hv Battery Cell Balancing Circuit B, Bms
Related codes
- P0DAEHybrid/EV Battery Cell Balancing Circuit A Stuck Off
- P0DB6Hybrid/EV Battery Cell Balancing Circuit C Stuck Off
- P0DBAHybrid/EV Battery Cell Balancing Circuit D Stuck Off
- P0DBEHybrid/EV Battery Cell Balancing Circuit E Stuck Off
- P0DC2Hybrid/EV Battery Cell Balancing Circuit F Stuck Off
- P0DC6Hybrid/EV Battery Cell Balancing Circuit G Stuck Off
- P0DCAHybrid/EV Battery Cell Balancing Circuit H Stuck Off
- P0DCEHybrid/EV Battery Cell Balancing Circuit I Stuck Off
- P0DD2Hybrid/EV Battery Cell Balancing Circuit J Stuck Off
- P0DD6Hybrid/EV Battery Cell Balancing Circuit K Stuck Off
- P0DDAHybrid/EV Battery Cell Balancing Circuit L Stuck Off
- P0DDEHybrid/EV Battery Cell Balancing Circuit M Stuck Off
- P0DAFHybrid/EV Battery Cell Balancing Circuit A Range/Performance
- P0DB0Hybrid/EV Battery Cell Balancing Circuit B
- P0DB1Hybrid/EV Battery Cell Balancing Circuit B Stuck On
- P0DB3Hybrid/EV Battery Cell Balancing Circuit B Range/Performance
- P0DB4Hybrid/EV Battery Cell Balancing Circuit C
- P0DB5Hybrid/EV Battery Cell Balancing Circuit C Stuck On
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.