U041A

Invalid Data Received From Battery Isolation/Voltage Stabilization Control Module

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$167–556 (est.)

Symptoms

Check Engine light comes on
Reduced performance of the hybrid system
Problems with charging a high-voltage battery
Limitation of functionality of electronic systems
Error message on the dashboard

Causes

Malfunction of the voltage stabilization module
Damage to the wiring harness to the module
Poor contact in module connectors
Problems with the module software
Short circuit in the module power supply circuit

How to Fix

Diagnostics of the voltage stabilization module
Checking the integrity of the wiring harness
Cleaning and checking connector contacts
Module software update
Replacing the module if necessary
Repair only from an authorized dealer

Related codes

U0418 U041B U041C