OBD Guide

P0DC5

Hybrid/EV Battery Cell Balancing Circuit G Stuck On

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

Symptoms

  • Reduced electric range
  • Extending battery charging time
  • Uneven heating of battery cells
  • Check Engine Light Illuminated
  • Reduced overall performance of the hybrid system

Causes

  • Faulty balancing resistor in group G
  • Problems with balance circuit wiring harness
  • Battery management module (BMS) malfunction
  • Short circuit in balancing circuit
  • Corrosion of contacts in the balancing system

How to Fix

  1. Diagnostics of the condition of the balancing circuit of group G
  2. Checking the resistance of balancing resistors
  3. Inspect the wiring harness and contacts for damage
  4. Checking the operation of the battery management module
  5. Replacing faulty balancing system components

Related codes

Error P0DC5 by Vehicle Brand