Invalid Data Received From Cruise Control Module

Where it lives

For U0405, the description names the module as the part involved.

Check these first

• The Cruise Control Module sending data the ECM rejects as invalid
• A wiring or connector fault between the Cruise Control Module and the ECM
• Low voltage that corrupts the Cruise Control Module messages
• Software in the Cruise Control Module that is out of step with the ECM

What to do next

1. Read stored codes on every module and note codes paired with the Cruise Control Module code
2. Check the Cruise Control Module connector pins for corrosion or a poor fit
3. Test the wiring between the Cruise Control Module and the ECM
4. Check battery voltage and charging under load
5. Replace the Cruise Control Module if the data stays invalid
6. Clear the code and retest

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