U0190 — Data bus: digital disc player/changer module D – no communication #

Note: The wording of this code may vary depending on the vehicle manufacturer (OEM).

• U0190 – Communication With Digital Disc Player/Changer Module “D” Lost (Ford)
• U0190 – Lost Communication With Digital Disc Player “D” (GM, Chrysler)
• U0190 – CAN Bus: No Communication With Audio Disc Changer D (BMW, Mercedes-Benz)
• U0190 – No CAN Message From Digital Disc Player D (Audi, VW)

Summary of code U0190 #

U0190 is a generic OBD-II network communication code that indicates a loss of communication between the vehicle’s main data bus (usually CAN: Controller Area Network) and the digital disc player/changer module D. This module typically manages CD or DVD playback functions. When the main control unit (often called the gateway module or BCM—Body Control Module) cannot exchange data with this specific audio component, it triggers code U0190. The issue might be intermittent or constant, and while it rarely affects drivability, it can disrupt comfort or entertainment features. The code is most often stored when the OEM’s network monitoring detects a prolonged or repeated communication failure.

Common symptoms for code U0190 #

Most drivers will notice little to no impact on core vehicle operations, but the following symptoms may occur:

• Disc player or changer is inoperative (won’t play or recognize discs)
• Audio system displays error messages referencing “disc error” or “no changer detected”
• Loss of audio source selection for CD/DVD changer
• Occasional popping or skipping sounds (if partial communication occurs)
• Check engine or warning light may illuminate in rare cases

Probable causes for code U0190 #

Several factors can disrupt communication between the vehicle network and the digital disc player/changer module. The most common causes are:

1. Loose or corroded electrical connectors at the disc module or along the CAN bus wiring
2. Faulty digital disc player/changer module D (internal failure)
3. Damaged or shorted CAN wiring (worn, pinched, or water-damaged wires)
4. Failed gateway control module (rare, but possible if multiple network codes are present)
5. Software or firmware mismatch after module replacement or update

Step-by-step diagnostic for code U0190 #

Diagnosing U0190 requires a logical, methodical approach. Here’s how an experienced technician would proceed:

1. Verify the code with an OBD-II scan tool and check for related network or audio system codes.
2. Inspect fuses for the disc player/changer and infotainment system.
3. Visually inspect all connectors and wiring at the disc player/changer module D and along its harness—look for corrosion, bent pins, or loose connections.
4. Check CAN bus integrity using an oscilloscope or advanced scan tool to confirm signal presence and quality.
5. Test the digital disc module D by unplugging/re-seating the connectors and, if possible, swapping with a known-good module.
6. Check for software updates or reprogramming needs using OEM diagnostic software.
7. If all else fails, test the gateway or BCM (especially if other U-codes are set for different modules).

Possible repairs for code U0190 #

Repairs should target the root cause identified in diagnostics. Typical solutions include:

• Cleaning, repairing, or replacing corroded/damaged connectors
• Repairing or replacing damaged CAN wiring
• Replacing the faulty digital disc player/changer module D
• Updating or reprogramming software for the affected module(s)
• Repairing or replacing the gateway control module (if network-wide communication issues exist)

Is it safe to drive with code U0190? #

Yes, you can generally continue driving with code U0190 present. This code is considered non-emissions and non-safety critical—meaning it mainly affects in-car audio entertainment and not vital vehicle functions. However, the disc player/changer will likely be unavailable until the fault is repaired. If you notice additional warning lights or network-related issues (such as multiple U-codes), further diagnosis should be prioritized.

Vehicles most commonly affected by code U0190 #

While U0190 can set on any modern vehicle using a networked audio system, it is most frequently seen on vehicles equipped with factory CD/DVD changers or advanced multimedia systems, especially:

• Ford (Focus, Fusion, Explorer, Edge, F-150 with Sony Audio)
• General Motors (Chevy Tahoe, Suburban, GMC Yukon, Cadillac Escalade)
• BMW (5 Series, 7 Series with iDrive and CD changers)
• Mercedes-Benz (E-Class, S-Class, M-Class, GLK with COMAND and CD changer)
• Volkswagen/Audi (Passat, Touareg, A6, Q7 with disc changers)

Common mistakes & best practices for code U0190 #

It’s easy to misdiagnose U0190 due to its non-critical nature. Avoid these pitfalls and follow these best practices:

• Don’t replace the disc changer module without confirming power and network communication are present at the connector.
• Check for simple issues (loose connectors, blown fuses) before assuming expensive module failure.
• Always scan for other network (Uxxxx) codes—multiple codes may indicate a central network problem, not just a faulty module.
• Use OEM diagnostic tools/software for accurate module identification and programming if needed.
• Document connector pin-outs and wire color codes before attempting repairs for easier reassembly.

Express FAQ for code U0190 #

Still have questions? Here are quick answers to common concerns:

• Q: Will code U0190 affect my car’s engine or transmission?
  A: No. U0190 only impacts communication with the audio disc module. Engine and drivability functions remain unaffected.
• Q: Can I clear U0190 by disconnecting the battery?
  A: While disconnecting the battery may temporarily clear the code, it will return if the communication problem persists. Proper diagnosis and repair are required for a lasting fix.