U04AF

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

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$167–556 (est.)

Symptoms

Check Engine light comes on
Incorrect battery level display
Reduced power or operating efficiency
The car goes into emergency mode
Other related errors appear

Causes

Battery Interface Control Module Malfunction
Problems with wiring or connectors
Software error in control module
Module power problems
Corroded or damaged electrical connections

How to Fix

Check connections and wiring to the Battery Interface Control Module
Scan the system for other related errors
Check power supply and grounding of the module
Update or reflash module software
Replace the Battery Interface Control Module if necessary

Related codes

U04AE U04B0 U04B1