WOMS
U code network High severity

U0110 Lost Communication With Drive Motor Control Module

The OBD2 code U0110 indicates that there is a loss of communication between the vehicle's control module and the drive motor control module, which can affect the operation of the vehicle's electric drive system

Definition

The OBD2 code U0110 indicates that there is a loss of communication between the vehicle's control module and the drive motor control module, which can affect the operation of the vehicle's electric drive system

Common causes

  • Faulty wiring or connectors
  • Failed Drive Motor Control Module (DMC)
  • Corroded or damaged connectors
  • Short circuit in the wiring harness
  • Open circuit in the wiring harness
  • Faulty power supply to the DMC
  • Issues with the vehicle's battery or charging system
  • Software or firmware issues in the DMC
  • Interference from other electronic components

Common misdiagnoses

  • Faulty wiring or connectors
  • Defective drive motor control module
  • Issues with the powertrain control module (PCM)
  • Malfunctioning battery or charging system
  • Problems with the vehicle's CAN bus system
  • Incorrectly diagnosed transmission issues
  • Faulty sensors related to the drive motor
  • Software or firmware issues in the control modules

Troubleshooting steps

  1. 1. Check for Other Codes

    Start by scanning the vehicle for any additional trouble codes. Sometimes, multiple codes can provide more context for the issue

  2. 2. Inspect Wiring and Connectors

  3. 3. Visually inspect the wiring harness and connectors related to the Drive Motor Control Module. Look for signs of damage, corrosion, or loose connections

  4. 4. Pay special attention to any connectors that may have been disturbed during repairs or maintenance

  5. 5. Check Power and Ground

  6. 6. Verify that the Drive Motor Control Module is receiving the correct power supply. Use a multimeter to check the voltage at the module's power and ground terminals

  7. 7. Ensure that the ground connections are clean and secure

  8. 8. Test the Drive Motor Control Module

  9. 9. If possible, test the Drive Motor Control Module itself. This may involve using a scan tool to check for communication with the module or performing a bench test if the module can be removed

  10. 10. If the module is faulty, it may need to be replaced

  11. 11. Inspect the CAN Bus

  12. 12. The communication between modules in the vehicle typically occurs over a Controller Area Network (CAN) bus. Check for any issues with the CAN bus wiring, such as shorts or opens

  13. 13. Use a scan tool to monitor the CAN bus for any irregularities

  14. 14. Check for Interference

  15. 15. Look for any aftermarket devices or modifications that may interfere with the vehicle's communication network. This includes alarms, stereo systems, or other electronic devices

  16. 16. Perform a Hard Reset

  17. 17. Disconnect the vehicle's battery for a few minutes to reset the modules. Reconnect the battery and see if the code returns

  18. 18. Update Software/Firmware

  19. 19. In some cases, the issue may be related to outdated software in the Drive Motor Control Module or other related modules. Check with the manufacturer for any available updates

  20. 20. Consult Technical Service Bulletins (TSBs)

  21. 21. Check for any TSBs related to the U0110 code for your specific vehicle make and model. Manufacturers may have issued guidance on common issues and fixes

  22. 22. Seek Professional Help

  23. 23. If the issue persists after performing these steps, it may be necessary to consult a professional mechanic or technician who has experience with your vehicle's specific systems. By following these troubleshooting steps, you can systematically identify and resolve the issue related to the U0110 code