U0298
Lost Communication With DC/DC Converter Control Module A
What it means
U0298 means Lost Communication With DC/DC Converter Control Module A.
Where it lives
For U0298, the description names the module as the part involved.
Check these first
- A break or short in the wiring from converter module A to the main computer
- A failed DC to DC converter module A
- Corrosion or water in the module connectors
- An incorrect installation or configuration
- A software fault in the main computer
What to do next
- Inspect the wiring and connector at DC to DC converter module A
- Check the module for signs of failure
- Verify the module is installed and configured correctly
- Update the main computer software
- Replace converter module A if it stays offline
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.