Powertrain, generic · Hybrid propulsion

P0B0E Hybrid/EV Battery Pack Current Sensor B Circuit

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

Many packs measure current with two channels or two sensors so the controller can cross-check them; sensor B is the second channel next to sensor A (P0ABF to P0AC3). P0B0E is its general circuit code. Toyota uses it as the base of internal codes on the 2020-25 RAV4 Hybrid: the sensor sends a voltage rising with current on channel IB0 (sensor A) and an inverse one on IB1 (sensor B). P0B0E11 (IB1 too low) and P0B0E15 (IB1 too high or open) are reported to a generic scan tool as P0B10 and P0B11, one trip, MIL on. GM monitors its fine-range channel B with P0B10, P0B11 and the A/B correlation P0B13. CARB requires circuit monitoring. State of charge then becomes uncertain.

Likely causes

Signal or ground wire of channel B damaged or connector loose
Current sensor or junction block with integrated sensor defective
Sensor supply voltage faulty
Battery ECU input defective

Symptoms

  • MIL and hybrid system warning on
  • Battery power limited, less electric assist
  • Implausible state-of-charge display

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

P0B0FP0B10P0B11P0B12P0B13P0ABF

References: estimateca.mymitchell.com, gsi.ext.gm.com, law.cornell.edu.