U0298
Lost Communication With DC/DC Converter Control Module A
U0298 is an OBD-II diagnostic trouble code meaning: Lost Communication With DC/DC Converter Control Module A. Common causes: open or short circuit in wiring, malfunction of the dc/dc converter module. Estimated repair cost: $56–278.
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
Error U0298 by Vehicle Brand
FAQ
What does the U0298 code mean?
U0298 is an OBD-II diagnostic trouble code that indicates: Lost Communication With DC/DC Converter Control Module A
What causes a U0298 error code?
The most common causes of U0298 include: Open or short circuit in wiring; Malfunction of the DC/DC converter module; Problems with module power or grounding; Damage to the CAN bus.
How do I fix a U0298 diagnostic trouble code?
To fix U0298: 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. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0298?
Limited driving only, diagnose soon
How much does it cost to fix U0298?
The estimated repair cost for U0298 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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