U0210
NetworkModule Communicationlow severityLost Communication With Door Switch A
What U0210 Means
The module network can no longer talk to door switch A. Door status and related functions may not update correctly.
Symptoms
- Door ajar warning wrong
- Interior lights misbehave
- Lock functions inconsistent
Common Causes
- Faulty door switch A
- Damaged wiring in door jamb
- Loose or corroded connector
- Blown fuse
Diagnostic Steps
- Scan for related U-codes
- Inspect door jamb harness
- Check switch connector for corrosion
- Test switch continuity and signal
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