Lost Communication With Door Switch B

Where it lives

For U0216, start at the switch the description names.

Check these first

• Damage to the wiring or connector between door switch B and the BCM
• A failed door switch B
• Corrosion or water at the switch B connections
• A short in the switch B wiring
• A BCM software or firmware fault

What to do next

1. Inspect the wiring and connector between door switch B and the BCM
2. Check the switch B connector for corrosion or water
3. Test door switch B signal at the BCM
4. Check the switch B circuit for shorts
5. Update the BCM software if a fault is stored
6. Clear the code and retest

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