WOMS
U code network Low severity

U0191 Lost Communication With Television

The OBD2 code U0191 indicates a loss of communication with the television module in a vehicle, suggesting that the vehicle's diagnostic system is unable to communicate with the television unit, which may affect...

Definition

The OBD2 code U0191 indicates a loss of communication with the television module in a vehicle, suggesting that the vehicle's diagnostic system is unable to communicate with the television unit, which may affect multimedia functions

Common causes

  • Faulty television module
  • Damaged wiring or connectors
  • Poor ground connection
  • Corroded terminals
  • Software issues or glitches
  • Faulty communication network (CAN bus issues)
  • Disconnected or loose harnesses

Common misdiagnoses

  • Faulty wiring or connectors
  • Malfunctioning body control module (BCM)
  • Defective infotainment system
  • Issues with the vehicle's network communication
  • Problems with the instrument cluster
  • Software glitches or updates needed
  • Faulty sensors related to the multimedia system

Troubleshooting steps

  1. 1. Check for Other Codes

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

  2. 2. Inspect Wiring and Connectors

    Examine the wiring and connectors associated with the television module and the infotainment system. Look for any signs of damage, corrosion, or loose connections

  3. 3. Check the Television Module

    If accessible, inspect the television module itself for any visible damage. Ensure that it is securely connected and that there are no signs of water intrusion or physical damage

  4. 4. Inspect the Infotainment System

    Ensure that the infotainment system is functioning properly. Check for any software updates or resets that may be needed

  5. 5. Battery and Ground Connections

    Ensure that the vehicle's battery is in good condition and that all ground connections are secure. Poor battery voltage or grounding issues can lead to communication problems

  6. 6. Perform a Hard Reset

    Disconnect the vehicle's battery for a few minutes to reset the vehicle's electronic systems. Reconnect the battery and see if the code persists

  7. 7. Check for Software Updates

    Some vehicles may require software updates for the infotainment system or other modules. Check with the manufacturer or a dealership for any available updates

  8. 8. Scan for Communication Issues

    Use a more advanced diagnostic tool to check for communication issues between modules. This can help identify if the problem is isolated to the television module or if other modules are affected

  9. 9. Consult Technical Service Bulletins (TSBs)

    Check for any TSBs related to the U0191 code for your specific vehicle make and model. Manufacturers may have issued guidance on common issues and fixes

  10. 10. Seek Professional Help

    If the issue persists after performing the above steps, it may be necessary to consult a professional mechanic or dealership for further diagnosis and repair. By following these steps, you can systematically identify and address the underlying cause of the U0191 code