P0B10Hybrid/EV Battery Pack Current Sensor B Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0B10 means the output of current sensor B lies below its valid range. GM uses a dual-range Hall sensor whose channel B covers small currents with high resolution: the 2019 battery energy control module table sets P0B10 when this fine current reads below -24 A (ADC count under 82) for 1.6 s within a 2 s window, Type A, one trip; the 2011 Volt table uses -23 A for 175 ms within 250 ms, one trip. Toyota reports P0B10 for the 2020-25 RAV4 Hybrid when the inverse channel IB1 voltage is excessively low (internal code P0B0E11), one trip, MIL on immediately. A short to ground or a lost sensor supply is typical. The high-side code is P0B11.
- What you may notice
- MIL and hybrid system warning on
- Battery charge and discharge power limited
- Engine runs more often, fuel use rises
- Likely causes
- LikelySensor B signal line shorted to ground
- Possible5 V supply of the current sensor missing
- PossibleCurrent sensor or junction block with integrated sensor defective
- 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.