U0197
Lost Communication With Telephone Control Module
U0197 is an OBD-II diagnostic trouble code meaning: Lost Communication With Telephone Control Module. Common causes: broken or damaged wires in the communication circuit, phone control module malfunction. Estimated repair cost: $56–167.
Symptoms
- Hands-free system does not work
- Lost connection with mobile device via Bluetooth
- Error on the multimedia system display
- Voice commands don't work
- Loss of sound from speakers during phone calls
Causes
- Broken or damaged wires in the communication circuit
- Phone control module malfunction
- Problems with the CAN bus
- Module software failures
- Poor contact in connectors
How to Fix
- Check the integrity of the wiring harness to the telephone module
- Inspect connectors for oxidation or damage
- Carry out CAN bus diagnostics
- Reboot the module (disconnect and reconnect the battery)
- Update multimedia system software
- If necessary, replace the telephone control module
Related codes
Error U0197 by Vehicle Brand
FAQ
What does the U0197 code mean?
U0197 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Telephone Control Module
What causes a U0197 error code?
The most common causes of U0197 include: Broken or damaged wires in the communication circuit; Phone control module malfunction; Problems with the CAN bus; Module software failures.
How do I fix a U0197 diagnostic trouble code?
To fix U0197: Check the integrity of the wiring harness to the telephone module. Inspect connectors for oxidation or damage. Carry out CAN bus diagnostics. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0197?
Yes, but get it checked soon
How much does it cost to fix U0197?
The estimated repair cost for U0197 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat