P0B10: Hybrid/EV Battery Pack Current Sensor B Circuit Low
What to do
As P0B0E — the pack is being managed without one of its two current measurements, so expect conservative behaviour and unreliable range figures.
What this code means
Sensor B's signal is below its valid range — low enough that the module treats it as a circuit fault rather than as a reading.
Low is the direction of opens, grounds and lost references: a signal wire pulled toward earth, a supply that is not arriving, a connector that has backed out. Note that a current sensor's zero is not the bottom of its range — it has to report current in both directions, so it sits mid-scale at rest and a genuine zero output is out of range rather than "no current".
The family's argument is at P0B0E.
Likely causes
Start here
- Wiring shorted to ground · moderate
- Corroded or loose connector · easy
Less common
- Failed sensor reference voltage supply · moderate
- Faulty battery current sensor · specialist
Symptoms
Components involved
Information, not instruction
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Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Community experience
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