Lost Communication With Power Steering Control Module A

Where it lives

For U0131, start at the module the description names.

Check these first

• A wiring or connector fault between the PCM and Power Steering Control Module A
• A failed Power Steering Control Module A
• A PCM fault that drops the link
• A module that was installed wrong
• Outdated firmware in the module or PCM

What to do next

1. Scan all modules for communication codes
2. Inspect the harness and connector at Power Steering Control Module A
3. Check the module power and ground feeds
4. Update the firmware on the module and PCM if the bus and feeds test good
5. Replace Power Steering Control Module A if the fault returns
6. Clear the code and retest

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