U033B

Software Incompatibility With Hybrid/EV Battery Interface Control Module B

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$167–556 (est.)

Symptoms

Loss of engine power
Reduced performance of the hybrid system
Warning messages on the dashboard
Incorrect battery level display

Causes

Outdated main control unit software
Battery control module fault B
Problems with CAN bus connection or data integrity
Software damage due to crashes

How to Fix

Check for software updates at your authorized dealer
Test Battery Management Module B for faults
Check the status and connection of the CAN bus
Replace battery control module B if necessary
Repair only from an authorized dealer

Related codes

U033A U033C U033D