U01A5

Lost Communication With Hybrid/EV Battery Interface Control Module F

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine light comes on
Reduced vehicle power
Switching to emergency mode
Errors in the operation of the hybrid system
Battery charge information is not available

Causes

Broken or damaged wiring to the battery module
Battery controller malfunction
Control module software failure
Module power problems
Corrosion of connectors

How to Fix

Check the integrity of the wiring harness
Inspect the battery management module connectors
Check fuses and module power relays
Scan the battery module for additional error codes
Update or reflash the control module software (if available)
Repair only from an authorized dealer

Related codes

U01A0 U01A1 U01A4