Invalid Data Received From Running Board Control Module A

Where it lives

For U0545, start at the module the description names.

Check these first

• Electrical noise on the data bus corrupting the running board control module A signal
• A low battery or charging fault that browns out the running board control module A
• A fault inside the running board control module A itself
• A loose, corroded, or water damaged connector at the running board control module A

What to do next

1. Scan all modules and record the stored and pending network codes
2. Check the running board control module A data bus wiring for opens, shorts, and chafing
3. Confirm the running board control module A reports correct live data on the scan tool
4. Repair or replace the running board control module A if the circuit, power, and bus tests pass
5. Clear the code and retest to confirm the running board control module A fault is gone

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