WOMS
U code network Medium severity

U0246 Lost Communication With "Seat Control Module E

The OBD2 code U0246 indicates a loss of communication with the Seat Control Module E, which may affect the operation of the seat adjustment features

Definition

The OBD2 code U0246 indicates a loss of communication with the Seat Control Module E, which may affect the operation of the seat adjustment features

Common causes

  • Faulty seat control module
  • Wiring issues (damaged, frayed, or corroded wires)
  • Poor connections or loose connectors
  • Faulty CAN bus communication
  • Software or firmware issues in the seat control module
  • Blown fuses related to the seat control system
  • Electrical interference from other components

Common misdiagnoses

  • Faulty Seat Control Module
  • Wiring issues or damaged connectors
  • Faulty Body Control Module (BCM)
  • Low battery voltage or weak battery
  • Faulty CAN bus communication
  • Software or firmware issues in the control modules
  • Grounding issues
  • Other related module failures (e.g., airbag module)

Troubleshooting steps

  1. 1. Check for Other Codes

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

  2. 2. Inspect Wiring and Connectors

    Visual Inspection: Check the wiring harness and connectors related to the seat control module for any signs of damage, corrosion, or loose connections

  3. 3. Connector Pins

    Ensure that the pins in the connectors are not bent or corroded

  4. 4. Test the Seat Control Module

    Module Functionality: If possible, test the seat control module to ensure it is functioning correctly. This may involve using a scan tool that can communicate with the module

  5. 5. Power and Ground

    Verify that the seat control module is receiving the proper power and ground signals. Use a multimeter to check voltage and continuity

  6. 6. Check for Communication Issues

    CAN Bus Integrity: If the vehicle uses a CAN bus system, check the integrity of the bus. Look for short circuits, open circuits, or other communication issues

  7. 7. Other Modules

    Ensure that other modules on the same bus are functioning correctly, as a failure in one module can affect communication with others

  8. 8. Inspect Fuses

    Check the fuses related to the seat control module and the body control module. Replace any blown fuses

  9. 9. Reset the System

    Clear the trouble codes using the OBD-II scanner and see if the code returns. Sometimes, a temporary glitch can cause communication issues

  10. 10. Update Software/Firmware

    If applicable, check if there are any software updates available for the vehicle’s modules. Sometimes, manufacturers release updates to fix communication issues

  11. 11. Consult Technical Service Bulletins (TSBs)

    Look for any TSBs related to the seat control module or communication issues for your specific vehicle make and model. Manufacturers may have identified common problems and solutions

  12. 12. Replace the Seat Control Module

    If all other steps fail and the module is determined to be faulty, consider replacing the seat control module

  13. 13. Professional Diagnosis

    If you are unable to resolve the issue, it may be best to consult a professional mechanic or dealership for a more in-depth diagnosis.Conclusion By following these troubleshooting steps, you can systematically identify and address the cause of the U0246 code. Always ensure safety precautions are taken when working with vehicle electronics