Powertrain, generic · Hybrid propulsion

P0B10 Hybrid/EV Battery Pack Current Sensor B Circuit Low

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

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.

Likely causes

Sensor B signal line shorted to ground
5 V supply of the current sensor missing
Current sensor or junction block with integrated sensor defective

Symptoms

  • MIL and hybrid system warning on
  • Battery charge and discharge power limited
  • Engine runs more often, fuel use rises

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–1,500
Time1–5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

hv battery pack current sensor bwiring harnessbms

Related codes

P0B11P0B0EP0B0FP0B13P0AC1

References: gsi.ext.gm.com, gsi.ext.gm.com, estimateca.mymitchell.com.