U0298

Lost Communication With DC/DC Converter Control Module A

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Dashboard warning light
Reducing voltage in a 12V system
Some electronic systems do not work
Problems with charging a 12V battery
Error messages on other systems

Causes

Open or short circuit in wiring
Malfunction of the DC/DC converter module
Problems with module power or grounding
Damage to the CAN bus
Software error in the module

How to Fix

Check the integrity of the wiring harness to the DC/DC module
Check power supply and grounding of the module
Scan all modules for other communication errors
Check or replace the DC/DC converter module
Update module software if necessary

Related codes

U0299 U0256 U0282