U034C

Software Incompatibility With Battery Energy Control Module C

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

~$167 (est.)

Symptoms

Check Engine light comes on
Reduced performance of the hybrid system
Incorrect display of battery charge level
Errors in the operation of the regenerative braking system
Reduced overall vehicle performance

Causes

Outdated control unit software
Errors in the firmware of the battery management module
Software version mismatch between modules
Software corruption due to power failure
Incompatibility after replacing the battery management module

How to Fix

Run diagnostics to confirm the error
Update the main control unit software
Update the battery management module firmware
Check compatibility of software versions between modules
If necessary, replace the battery management module

Related codes

U034B U034D U0350