Fault Code U0198
Code meaning, symptoms, possible causes, part number, and estimated cost.
U0198
Lost Communication With Telematic Control Module
Code U0198 indicates a loss of communication with the Telematic Control Module (TCM). This can affect services such as navigation, emergency assistance, or concierge services.
Part Details
Part Name
Telematic Control Module (TCM)
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪800 - ₪3500
Engine Location
Under seats or trunk
Symptoms
- OnStar/SOS services not functioning
- GPS navigation inaccurate or not working
- Inability to connect to roadside assistance services
- Telematics-related error messages
Possible Causes
- 1Faulty TCM module
- 2Wiring issue or loose connector
- 3Damaged CAN Bus
- 4Insufficient power supply to telematics module
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