U0289

Lost Communication With DC/AC Converter Control Module B

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$167–556 (est.)

Symptoms

Check Engine light comes on
Reduced power of electrical equipment
Battery charging problems
Limitation of hybrid system functionality
The car goes into emergency mode

Causes

Open or short circuit in the communication circuit
Converter control module malfunction
Module power problems
Corrosion or poor contact in connectors
Software error in the ECU

How to Fix

Check the integrity of the wiring harness to the module
Check the power supply and ground of the module
Inspect connectors for corrosion or damage
Scan the module for additional errors
If necessary, replace the converter control module
Repair only from an authorized dealer

Related codes

U0290 U0288 U0291