Invalid Data Received From Chassis Control Module A

Where it lives

For U042B, the part to look at first is the module named here.

Check these first

• An interrupted ground to the Chassis Control Module A
• A calibration fault in the Chassis Control Module A
• Bent or backed out pins at the Chassis Control Module A connector

What to do next

1. Read the stored codes on a scan tool
2. Monitor Chassis Control Module A live data for dropouts
3. Replace the Chassis Control Module A if the circuit and grounds test good
4. Clear the code and retest

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