OBD Guide

P0DB6

Hybrid/EV Battery Cell Balancing Circuit C Stuck Off

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–278 (est.)

Symptoms

  • Reduced electric range
  • Deterioration of vehicle dynamics
  • Battery warning indication
  • Uneven charge of battery cells
  • Increased heating of the battery pack

Causes

  • Battery balancing module malfunction
  • Open or short circuit in circuit C
  • Problems with the wiring harness to the balancing module
  • Battery Management Module (BMS) malfunction
  • Corrosion or poor contact in connectors

How to Fix

  1. Check the integrity of balancing circuit C
  2. Test the battery balancing module
  3. Inspect the wiring harness and connectors for damage
  4. Check the operation of the battery management unit (BMS)
  5. Replace faulty components if necessary

Related codes

Error P0DB6 by Vehicle Brand