Invalid Data Received From Vehicle Security Control Module

Where it lives

For U0427, start at the module the description names.

Check these first

• Loss of power or ground at the Vehicle Security Control Module
• A corroded or damaged Vehicle Security Control Module connector
• A key or fob the Vehicle Security Control Module does not recognize

What to do next

1. Read the stored codes on a scan tool
2. Watch Vehicle Security Control Module data on a scan tool
3. Replace the Vehicle Security Control Module if the wiring and voltage tests pass
4. Clear the code and retest

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