U04AA

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

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
Switching to emergency mode
Battery charging problems (for PHEV)
Incorrect display of battery charge level

Causes

Battery Interface Control Module Malfunction
Damage to the wiring harness to the module
Poor contact in connectors
Software problems
Short circuit in communication circuit

How to Fix

Check connections and integrity of wiring harness
Scan the module for additional errors
Update module software
Check power supply and grounding of the module
Replace the Battery Interface Control Module if necessary
Repair only from an authorized dealer

Related codes

U04AB U04AC P0A80