Powertrain, generic (extended)

P2BE6 Hybrid/EV Battery Pack Current Sensor C Low

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P2BE6 is set when the output of current sensor C drops below the lowest value it can deliver in normal service. Unlike its A and B siblings, the official title omits the word circuit, but the meaning is the same out-of-range low check. No manufacturer documents P2BE6 publicly. GM's test for the coarse channel of sensor A (P0AC1) gives the scale: a converted current below -573 A (ADC count under 82) for 1.6 s within 2 s fails it, Type A, one trip. A signal shorted to ground, a missing sensor supply or a broken sensor are the usual reasons. CARB requires out-of-range checks for hybrid inputs. Without this value the controller reduces battery power; the high side is P2BE7, the plausibility code P2BE5.

Likely causes

Signal wire shorted to ground
Sensor supply voltage missing
Current sensor C defective

Symptoms

  • MIL and hybrid or EV warning on
  • Reduced power, possibly no ready mode

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€150–1,500
Time1–5 h

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

Parts involved

hv battery pack current sensor cwiring harnessbms

Related codes

P2BE7P2BE4P2BE5P0AC1P0B10

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