Invalid Data Received From Entertainment Control Module - Rear B

Where it lives

For U054A, the part to look at first is the module named here.

Check these first

• A low battery or charging fault that browns out the entertainment control module rear B
• A fault inside the entertainment control module rear B itself
• A loose, corroded, or water damaged connector at the entertainment control module rear B

What to do next

1. Scan all modules and record the stored and pending network codes
2. Check the entertainment control module rear B data bus wiring for opens, shorts, and chafing
3. Repair or replace the entertainment control module rear B if the circuit, power, and bus tests pass
4. Clear the code and retest to confirm the entertainment control module rear B fault is gone

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