WOMS
U code network Medium severity

U0498 Invalid Data Received From Telephone Control Module

The OBD2 code U0498 indicates that the vehicle's control module has received invalid or corrupted data from the Telephone Control Module, which may affect communication between modules

Definition

The OBD2 code U0498 indicates that the vehicle's control module has received invalid or corrupted data from the Telephone Control Module, which may affect communication between modules

Common causes

  • Faulty Telephone Control Module (TCM)
  • Wiring issues or damaged connectors
  • Communication network problems (CAN bus issues)
  • Software glitches or outdated firmware
  • Corrupted data transmission
  • Power supply issues to the TCM
  • Interference from aftermarket devices or modifications

Common misdiagnoses

  • Faulty Telephone Control Module
  • Wiring issues or shorts in the communication lines
  • Faulty Body Control Module (BCM)
  • Software or firmware issues in the control modules
  • Issues with the vehicle's network communication (CAN bus)
  • Faulty or incompatible aftermarket accessories
  • Low battery voltage or power supply issues

Troubleshooting steps

  1. 1. Check for Additional Codes

    Use an OBD-II scanner to check for any other related trouble codes. Sometimes, multiple codes can provide more context for the issue

  2. 2. Inspect Wiring and Connectors

    Examine the wiring and connectors associated with the Telephone Control Module. Look for signs of damage, corrosion, or loose connections that could cause communication issues

  3. 3. Reset the Code

    Clear the trouble code using an OBD-II scanner and see if it returns. Sometimes, a temporary glitch can cause the code to appear

  4. 4. Check the Telephone Control Module

    If the code returns, the Telephone Control Module itself may be faulty. Inspect it for any visible damage or signs of failure

  5. 5. Update Software/Firmware

    Check if there are any software or firmware updates available for the vehicle's control modules. Sometimes, manufacturers release updates to fix bugs or improve communication between modules

  6. 6. Test the Module

    If possible, test the Telephone Control Module in another compatible vehicle to see if it functions correctly. This can help determine if the module is faulty

  7. 7. Inspect Other Modules

    Since communication issues can sometimes stem from other modules, check the related control modules (like the Body Control Module or Infotainment System) for faults or communication errors

  8. 8. Check Power and Ground

    Ensure that the Telephone Control Module is receiving proper power and ground. Use a multimeter to check voltage and continuity

  9. 9. Consult Technical Service Bulletins (TSBs)

    Look for any TSBs related to the U0498 code for your specific vehicle make and model. Manufacturers may have identified common issues and provided solutions

  10. 10. Professional Diagnosis

    If the issue persists after performing the above steps, consider seeking help from a professional mechanic or dealership. They may have specialized diagnostic tools and knowledge to resolve the issue. By following these steps, you can systematically diagnose and potentially resolve the U0498 code