U0296

Lost Communication With AC/DC Converter Control Module A

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine light comes on
Problems with charging a high-voltage battery (in hybrid/electric cars)
The climate system does not work
Reduced vehicle power
Errors in the operation of electronic systems

Causes

Open or short circuit in the communication circuit
AC/DC module fault
Module power problems
Corroded or poor connector contact
Software error in the module

How to Fix

Check the integrity of the wiring harness to the AC/DC module
Check fuses and relays associated with the module
Inspect connectors for corrosion or damage
Conduct module diagnostics using a scanner
Update module software (if available)
Repair only from an authorized dealer

Related codes

U0297 U0298 U0295