U04A2
Invalid Data Received From Hybrid/EV Battery Interface Control Module B
U04A2 is an OBD-II diagnostic trouble code meaning: Invalid Data Received From Hybrid/EV Battery Interface Control Module B. Common causes: problems with the can bus, broken or damaged wiring to the battery module. Estimated repair cost: $56–278.
Symptoms
- Check Engine light comes on
- Hybrid system power reduction
- Inability to switch to electric mode
- Errors in the operation of the recuperation system
- Reduced performance of the hybrid system
Causes
- Problems with the CAN bus
- Broken or damaged wiring to the battery module
- Battery control module fault B
- Module power problems
- Contact corrosion
How to Fix
- Check the integrity of the CAN bus and wiring
- Diagnose battery control module B
- Check connections and contacts
- Update module software
- Repair only from an authorized dealer
Related codes
Error U04A2 by Vehicle Brand
FAQ
What does the U04A2 code mean?
U04A2 is an OBD-II diagnostic trouble code that indicates: Invalid Data Received From Hybrid/EV Battery Interface Control Module B
What causes a U04A2 error code?
The most common causes of U04A2 include: Problems with the CAN bus; Broken or damaged wiring to the battery module; Battery control module fault B; Module power problems.
How do I fix a U04A2 diagnostic trouble code?
To fix U04A2: Check the integrity of the CAN bus and wiring. Diagnose battery control module B. Check connections and contacts. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U04A2?
Limited driving only, diagnose soon
How much does it cost to fix U04A2?
The estimated repair cost for U04A2 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat