Invalid Data Received From Body Control Module B

Where it lives

For U0443, the part to look at first is the module named here.

Check these first

• A weak power or ground feed to the Body Control Module B
• Water or heat damage to the Body Control Module B
• A corroded or damaged Body Control Module B connector
• Damaged or shorted wiring at the Body Control Module B
• Bent or backed out pins at the Body Control Module B connector

What to do next

1. Pull all module codes with a scan tool
2. Monitor Body Control Module B live data for dropouts
3. Test the Body Control Module B wiring for open and short faults
4. Check the power and ground feeds to the Body Control Module B
5. Replace the Body Control Module B if the circuit and grounds test good
6. Clear the code and retest

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