OBD Guide

P0DAB

Hybrid/EV Battery Cell Balancing Performance

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$167–889 (est.)

Symptoms

  • Reduced range on a single charge
  • Increased charging time
  • Hybrid System Check Warning
  • Power loss in EV mode
  • Uneven battery discharge

Causes

  • Battery cell degradation
  • BMS balancing board malfunction
  • Problems with communication between BMS modules
  • Corrosion or contact failure in the high voltage system
  • Battery management system software errors

How to Fix

  1. Diagnosis of battery cell condition
  2. Checking balancing resistors and MOSFET transistors
  3. Testing the CAN bus of the BMS module
  4. BMS Software Update
  5. Replacing defective cells or the entire battery module

Related codes

Error P0DAB by Vehicle Brand