Lost Communication With Telephone Control Module

Where it lives

For U0197, the description names the module as the part involved.

Check these first

• Damaged electrical connections at the telephone control module
• A failed telephone control module
• A software or firmware fault in the telephone module
• Interference from other electronics in the vehicle
• Physical damage to the telephone control module

What to do next

1. Inspect the telephone control module wiring and connections
2. Check the telephone module for physical damage
3. Update the telephone control module firmware
4. Remove devices that may cause interference
5. Replace the telephone control module if faulty
6. Clear the code and retest

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