Lost Communication With Body Control Module

Where it lives

For U0140, the part to look at first is the module named here.

Check these first

• A wiring or connector fault between the Body Control Module and other modules
• Corrosion or water at the Body Control Module or related parts
• A failed Body Control Module
• A module that was installed or configured wrong
• A software fault in the module communication

What to do next

1. Scan all modules for communication codes
2. Inspect the Body Control Module wiring and connectors
3. Check the module power and ground feeds
4. Confirm the Body Control Module configuration matches the vehicle
5. Replace the Body Control Module if the fault returns
6. Clear the code and retest

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