Powertrain, generic · Hybrid propulsion

P0B0F Hybrid/EV Battery Pack Current Sensor B Circuit Range/Performance

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

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.

Likely causes

Current sensor B offset drift or ageing
Ground offset or high resistance in the sensor wiring
Sensor displaced on the busbar or magnetic interference

Symptoms

  • Hybrid or EV warning, MIL possible
  • State of charge jumps or drifts
  • Reduced battery power

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

P0B0EP0B10P0B11P0B12P0B13P0AC0

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