Lost Communication With Digital Disc Player/Changer Module B

Where it lives

For U0188, start at the module the description names.

Check these first

• A failed disc changer module B
• Corroded or damaged wiring between the PCM and changer module B
• A short or open in the changer module B harness
• A poor or corroded connector at changer module B
• A software fault in changer module B or the audio system

What to do next

1. Inspect the wiring between the PCM and changer module B
2. Check the changer module B connector for corrosion
3. Monitor changer module B communication on a scan tool
4. Update the audio system software
5. Replace changer module B if it stays offline
6. Clear the code and retest

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