Powertrain, generic · Hybrid propulsion

P0B60 Hybrid/EV Battery Voltage Sense H Circuit Low

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P0B60 means channel H reports less voltage than any healthy cell or block could hold, so the measurement itself is suspect. GM publishes three variants. Lithium-ion packs with a battery energy control module (2016 and 2019 tables) trip at 0.2 V or less for 1.4 s inside a 2 s window, Type A, provided no open-line, communication or balancing fault is already stored. The BAS Plus mild hybrid in table 13OBDG05C uses a cell sense line threshold of 1.4 V and needs 7 failures out of 10, Type B. The 2012 two-mode trucks compare blocks 8 and 9, both under 2 V in 15 of 20 samples, Type B. Typical culprits are a sense lead shorted to ground or a failed input on the monitoring board.

Likely causes

Channel H sense lead shorted to ground or to the next lower tap
Failed measuring input on the cell monitoring board
Cell or block on channel H actually collapsed

Symptoms

  • MIL and hybrid or EV system warning
  • Electric drive power limited or switched off
  • Charging interrupted

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–6,000
Time1–8 h

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

Parts involved

hv battery voltage sense hwiring harnessbms

Related codes

P0B5EP0B5FP0B61P0B62P0B5BP0B65

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