Powertrain, generic · Hybrid propulsion

P0B1E Hybrid/EV Battery Pack Voltage Sense D Circuit

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

Voltage sense D is the fourth and last pack voltage measurement in the SAE J2012 scheme. P0B1E is its general circuit code: the battery controller treats this input as electrically faulty, for example open or without a usable raw signal. The assignment of D to a specific measuring point is manufacturer-specific. No manufacturer documents P0B1E publicly. GM illustrates the monitoring on channel A, comparing pack-side voltage with limits and with the summed cell voltages (P0ABB to P0ABD). CARB requires battery voltage sensors of hybrid storage systems to be monitored like other inputs. Detailed fault types of channel D are P0B1F to P0B22. High-voltage operation is usually restricted.

Likely causes

Voltage sense lead D or its fuse open
Sense connector loose or corroded
Measurement input of the battery controller defective

Symptoms

  • MIL and hybrid/EV system warning on
  • Battery power limited, reduced electric drive or assist
  • Vehicle may not reach Ready or may shut down the high-voltage system

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–2,500
Time1–6 h

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

Parts involved

hv battery pack voltage sense dwiring harnessbms

Related codes

P0B1FP0B20P0B21P0B22P0B19P0ABA

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