U025D
Lost Communication With Front Controls Interface Module B
What it means
U025D means Lost Communication With Front Controls Interface Module B.
Where it lives
For U025D, start at the module the description names.
Check these first
- Damaged wiring between front controls interface module B and the main computer
- A failed front controls interface module B
- Water or corrosion in the module or its connectors
- The module or related parts fitted incorrectly
- A software fault blocking communication
What to do next
- Scan and confirm front controls interface module B is offline
- Inspect the module B wiring and connectors
- Check the module for water or corrosion
- Verify the module is fitted and connected correctly
- Replace front controls interface module B if faulty
- Clear the code and retest
Look up another code
Enter a full code or a symptom. Press / to search. How to read a code
Type a code above, or start from a symptom or a common code.
Updated
Generic SAE J2012 definition. Last updated 2026-10-10.