OBD Guide

U04A7

Invalid Data Received From Hybrid/EV Battery Interface Control Module G

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$167–556 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced vehicle power
  • Limitation of hybrid system operation
  • Inability to charge the battery
  • Error message on the dashboard

Causes

  • Battery management module malfunction
  • Damage to the CAN bus
  • Open or short circuit in wiring
  • Module power problems
  • Software errors in the control module

How to Fix

  1. Check connections and integrity of wiring to the module
  2. Scan the CAN bus for errors
  3. Check power supply and grounding of the module
  4. Update module software
  5. If necessary, replace the battery management module
  6. Repair only from an authorized dealer

Related codes

Error U04A7 by Vehicle Brand