Powertrain, generic · Hybrid propulsion

P0B62 Hybrid/EV Battery Voltage Sense H Circuit Intermittent/Erratic

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P0B62 describes a channel H signal that jumps or cuts out for moments rather than failing permanently. No manufacturer documents this code publicly. It is worth noting that Ford's 2023 Mach-E and E-Transit bulletin attributes an intermittent flexible printed circuit fault to the open-circuit code P0B5E, not to P0B62, and GM's published tables contain no erratic monitor for channel H at all. The code is therefore defined by SAE J2012 but appears to remain unused in practice. CARB demands that battery voltage sensors of the energy storage system be checked like every other input. If it ever appears, logging channel H next to channels G and I while moving the harness is the sensible first step.

Likely causes

Intermittent contact at the channel H connector or flexible circuit
Cracked solder joint on the monitoring board
Inverter noise coupling into the sense line

Symptoms

  • Warning appears occasionally and clears after a restart
  • Short interruptions of electric drive

Repair estimate

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

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

Parts involved

hv battery voltage sense hwiring harnessbms

Related codes

P0B5EP0B5FP0B60P0B61P0B5DP0B67

References: law.cornell.edu, static.nhtsa.gov, gsi.ext.gm.com.