Powertrain, generic · Hybrid propulsion

P0B58 Hybrid/EV Battery Voltage Sense F Circuit Intermittent/Erratic

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P0B58 is reserved for an erratic signal on cell sense channel F, and the honest state is short: no manufacturer documents this code publicly. The neighbouring codes are well covered; Ford and GM use the open circuit code P0B54, GM and Chrysler the range code P0B55, GM the fixed low and high limits. CARB demands monitoring of all battery voltage sensors of the storage system. An erratic test would catch sudden steps between successive samples that stay inside the low and high limits. Likely causes are a sense tap that loosens under vibration or a damaged section of the flexible circuit, and the symptoms typically come and go with road conditions and temperature.

Likely causes

Sense tap of channel F loosening under vibration
Damaged section of the flexible sense circuit

Symptoms

  • Sporadic warning depending on road or temperature
  • Occasional brief power reduction

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€80–6,000
Time0.5–8 h

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

Parts involved

hv battery voltage sense fwiring harnessbms

Related codes

P0B54P0B55P0B56P0B57P0B53P0B5D

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