U0190 - Lost communication with digital disc reader/changer module D

Introduction

The DTC U0190 error code indicates a communication issue with the digital disc player/changer module D within a vehicle's infotainment system. This situation can lead to malfunctions in the audio system, navigation, and other related functions. Diagnosing and repairing this error requires a thorough understanding of the vehicle's communication network and the modules involved.

Symptoms

When the U0190 error code occurs, several symptoms may appear, including:

  • The infotainment system does not detect the disc player.
  • Error messages on the dashboard display or infotainment system.
  • Malfunctions in the use of audio functions, such as playing CDs or audio files.
  • Inability to change tracks or select audio sources.
  • Activation of other related DTC codes, such as U0191 (Lost Communication with Digital Disc Player/Changer Module A) or U0101 (Lost Communication with Transmission Control Module).

Cause

The causes of the U0190 error code can be many and include:

  • Blown fuses :
    A damaged fuse can interrupt power to the player/changer module.

  • Damaged cables :
    Worn, oxidized, or disconnected wires can interrupt communication between the ECU and the CD player/changer.

  • Land problems :
    A poor ground connection can negatively affect communication.

  • Disc player/changer module malfunction :
    The module itself may be defective and require replacement.

  • CAN communication problems :
    Interference in the CAN communication network can prevent the correct exchange of data between the various modules.

Diagnosis

Diagnosing the U0190 code requires the use of OBD-II scan tools and can be broken down into several steps:

  1. DTC Code Scan :
    Use a scan device to read the stored trouble codes and check for related codes.

  2. Checking power and ground :
    Check the fuses and measure the supply voltage and ground connection of the player/changer module.

  3. Visual inspection of cables :
    Visually inspect the cables for any signs of wear or damage, especially where the cables pass through friction points.

  4. Communication test :
    Use an oscilloscope or protocol analyzer to verify communication on the CAN network and identify any transmission problems.

  5. Checking the player/changer module :
    If all other checks are OK, test the player/changer module to confirm proper operation.

Resolution and Repair

Once you have identified the cause of the U0190 code, you can proceed with the resolution. Here are some of the common repairs:

  • Fuse replacement :
    If you find any blown fuses, replace them with ones of the correct amperage.

  • Cable Repair :
    If the cables are damaged, repair them or replace them with new wiring.

  • Fixed land issues :
    Make sure all ground connections are secure and free from oxidation.

  • Replacing the module :
    If the disc player/changer module is defective, replace it with a known good unit.

  • CAN network reset :
    If you encounter communication problems in the CAN network, resolve them using standard diagnosis and repair procedures.

Insight: Components Involved in Failure

Mechanical and electrical components involved in the U0190 error code include:

  • Disc player/changer module :
    This device is responsible for reading and playing discs. An internal malfunction may prevent proper operation.

  • Engine Control Unit (ECU) :
    The ECU controls various aspects of the vehicle, including communication with the CD changer module. A fault in the ECU can affect communication.

  • CAN communication network :
    The CAN network is essential for communication between the various electronic modules of the vehicle. Problems in this network can cause widespread malfunctions.

  • Fuses and wiring :
    Fuses and wiring play a crucial role in providing power and communicating between components. Their integrity is essential for the proper functioning of the system.

Conclusions

The DTC U0190 trouble code is a common challenge for auto repairers, but with accurate diagnosis and a systematic approach to troubleshooting, it is possible to restore the proper functioning of the infotainment system. The key is to follow a thorough diagnostic procedure, identify the underlying causes and address them appropriately. Knowing the components involved and their interactions is essential to ensure an effective and long-lasting repair.

Important
Not all OBD2 codes used by one manufacturer are used by other brands, and may not have the same meaning.
The information presented here is for informational purposes only. We are not responsible for any actions you take on your vehicle. If you have any concerns about repairing your vehicle, please contact your repair shop.