P0B0FHybrid/EV Battery Pack Current Sensor B Circuit Range/Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P0B0F flags a current sensor B signal that is electrically in range but implausible, for example an offset at zero current or a value that does not match the other measurement. No manufacturer documents this exact code publicly. GM handles comparable faults differently: on its dual-range sensor, the 2019 table P0B13 compares sensors A and B and fails when they differ by more than 10 A while both read between -20 and 20 A, 400 of 500 samples at 25 ms, Type A; offset errors of sensor A are P0AC0. CARB requires rationality checks for hybrid battery inputs. A drifting current reading corrupts the state-of-charge calculation, so the controller tends to narrow the usable battery window.
- What you may notice
- Hybrid or EV warning, MIL possible
- State of charge jumps or drifts
- Reduced battery power
- Likely causes
- LikelyCurrent sensor B offset drift or ageing
- PossibleGround offset or high resistance in the sensor wiring
- RareSensor displaced on the busbar or magnetic interference
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €100 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.