WOMS
U code network Medium severity

U0163 Lost Communication With Navigation Control Module

The OBD2 code U0163 indicates that there is a lost communication with the navigation control module, meaning the vehicle's onboard computer is unable to communicate with the navigation system

Definition

The OBD2 code U0163 indicates that there is a lost communication with the navigation control module, meaning the vehicle's onboard computer is unable to communicate with the navigation system

Common causes

  • Faulty navigation control module
  • Damaged wiring or connectors
  • Poor electrical connections
  • Software issues or bugs
  • Blown fuses
  • Corroded terminals
  • Faulty CAN bus communication
  • Malfunctioning vehicle control modules

Common misdiagnoses

  • Faulty Navigation Control Module
  • Wiring issues or damaged connectors
  • Faulty Instrument Cluster
  • Faulty Body Control Module (BCM)
  • Faulty Engine Control Module (ECM)
  • Software issues or updates needed
  • Battery or power supply problems
  • Grounding issues

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 the Wiring and Connectors

    Visual Inspection: Check the wiring harness and connectors related to the navigation 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, corroded, or damaged

  4. 4. Check the Navigation Control Module

    Location: Identify the location of the navigation control module in your vehicle

  5. 5. Physical Condition

    Inspect the module for any physical damage or signs of water intrusion

  6. 6. Test the Power and Ground

    Power Supply: Use a multimeter to check if the navigation control module is receiving the correct voltage

  7. 7. Ground Connection

    Ensure that the ground connection is solid and free of corrosion

  8. 8. Check for Communication Issues

    CAN Bus Communication: Verify that the CAN bus is functioning properly. You can do this by checking for communication with other modules in the vehicle

  9. 9. Scan Tool

    Use a professional scan tool to see if you can communicate with the navigation control module. If you can’t, it may indicate a problem with the module itself

  10. 10. Inspect Related Modules

    Sometimes, the issue may not be with the navigation control module but with another module that communicates with it. Check for issues with other related modules

  11. 11. Software Updates

    Check if there are any software updates available for the navigation control module or the vehicle’s ECU. Sometimes, a software glitch can cause communication issues

  12. 12. Reset the System

    Disconnect the battery for a few minutes to reset the vehicle’s systems. Reconnect and see if the code reappears

  13. 13. Replace the Navigation Control Module

    If all other steps fail and you have confirmed that the module is not communicating, it may be necessary to replace the navigation control module

  14. 14. Consult a Professional

    If you are unable to resolve the issue after these steps, it may be best to consult a professional mechanic or technician who has experience with your specific vehicle make and model.Additional Tips: - Always refer to the vehicle’s service manual for specific diagnostic procedures and specifications. - Keep safety in mind when working with electrical components; disconnect the battery when necessary. By following these steps, you should be able to identify the cause of the U0163 code and take appropriate action to resolve the issue