Invalid Data Received From Impact Classification System Module

Where it lives

For U0551, the description names the module as the part involved.

Check these first

• A loose, corroded, or water damaged connector at the impact classification system module
• An open or short in the impact classification system module wiring to the module that receives its data
• A lost power or ground feed to the impact classification system module

What to do next

1. Scan all modules and record the stored and pending network codes
2. Confirm the impact classification system module reports correct live data on the scan tool
3. Repair or replace the impact classification system module if the circuit, power, and bus tests pass
4. Clear the code and retest to confirm the impact classification system module fault is gone

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