Invalid Data Received From Engine Coolant Pump Control Module

Where it lives

For U04A0, the part to look at first is the pump named here.

Check these first

• Corrupted or outdated software in the Engine Coolant Pump Control Module
• Corroded or damaged pins at the Engine Coolant Pump Control Module connector
• A poor ground shared with the Engine Coolant Pump Control Module

What to do next

1. Scan every module and record the stored codes
2. Inspect the Engine Coolant Pump Control Module connector for corrosion or backed out pins
3. Replace the Engine Coolant Pump Control Module if the circuit and grounds test good
4. Clear the code and retest

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