U0190 is a generic OBD-II network communication fault code that means Lost Communication With Digital Disc Player/Changer Module D. The vehicle has detected that communication with Digital Disc Player/Changer Module D has been lost. 1
The affected module is associated with the vehicle's digital disc, CD changer, or multimedia system on applicable vehicles. The exact system design, module location, power supply, communication network, and relationship between the electronic module and the physical disc mechanism vary by manufacturer and model.
U0190 does not automatically mean that Digital Disc Player/Changer Module D has failed. A blown fuse, loss of power, poor ground, damaged wiring, connector corrosion, communication-network problems, or low system voltage can also cause this code.
Fault Code Description
U0190 = Lost Communication With Digital Disc Player/Changer Module D.
Code type: Generic OBD-II Network Communication Code.
Likely fault location: Digital Disc Player/Changer Module D, module power supply, ground circuit, fuse, communication wiring, connectors, or the vehicle communication network.
The letter D identifies a particular digital disc player/changer module within the vehicle's electronic architecture. Not every vehicle uses Modules A, B, C, and D as four separate physical units.
What Does U0190 Mean?
Modern vehicles use communication networks to allow electronic control modules to exchange information. Digital Disc Player/Changer Module D communicates with the radio, infotainment system, and other applicable modules through the vehicle communication network.
When the expected communication messages from Module D are no longer received, another control module may store U0190.
The communication failure can result from loss of module power, a poor ground, an open or shorted communication circuit, damaged connectors, network faults, or an internal module problem.
Symptoms of U0190
- CD or digital disc functions may not operate.
- Disc changer may not be recognized.
- Disc source may disappear from the audio menu.
- Disc loading or unloading may fail.
- Disc selection may not work.
- Track information may be unavailable.
- Audio playback may be unavailable.
- Radio or infotainment system may display a communication or disc error.
- Intermittent operation of the entertainment system.
- Diagnostic scan tool may be unable to communicate with Module D.
- Additional U-codes may be stored in other modules.
Common Causes of U0190
- Blown fuse supplying Digital Disc Player/Changer Module D.
- Loss of battery power.
- Loss of ignition or accessory power.
- Poor module ground.
- Open communication circuit.
- Short circuit in communication wiring.
- Damaged wiring harness.
- Corroded electrical connector.
- Loose or damaged connector terminals.
- Water or moisture intrusion.
- Low or unstable vehicle voltage.
- Previous incorrect wiring repair.
- Internal failure of Digital Disc Player/Changer Module D.
- Software or configuration problem on applicable vehicles.
Digital Disc Player/Changer Module D vs. CD Changer
The Digital Disc Player/Changer Module D and the physical CD Changer are not necessarily the same component.
Digital Disc Player/Changer Module D
This designation refers to the electronic module or module identity responsible for communication and control functions associated with the digital disc system.
It can communicate with the radio or infotainment system and exchange information with the vehicle network.
CD Changer
A CD Changer generally refers to the physical mechanism that stores, loads, selects, and plays multiple discs.
It may contain motors, gears, trays, sensors, and optical components.
Some vehicles combine the electronic module and mechanical changer into one assembly, while others use separate components. Therefore, U0190 should not automatically be interpreted as a failed CD changer.
U0190 Digital Disc Module D Fuse
Digital Disc Player/Changer Module D requires electrical power protected by one or more fuses. Depending on the vehicle, the applicable fuse may be located in the interior fuse box, instrument-panel fuse box, or engine-compartment fuse box.
The fuse may be labeled RADIO, AUDIO, MEDIA, INFOTAINMENT, CD, or another manufacturer-specific designation.
There is no universal fuse number for U0190. Always use the fuse diagram for the exact vehicle.
How to Check the Fuse
- Locate the vehicle-specific fuse diagram.
- Identify the fuse supplying the digital disc or audio system.
- Verify the correct fuse rating.
- Inspect the fuse for an open element.
- Test for voltage at the fuse when the circuit is energized.
- Inspect fuse terminals for corrosion or overheating.
- Never install a higher-rated fuse.
If the replacement fuse blows immediately, do not repeatedly replace it. Diagnose the circuit for a short circuit, damaged wiring, water intrusion, or excessive current draw.
U0190 Module D Power and Ground
A module can appear completely defective when it has simply lost its power or ground supply.
Use the vehicle-specific wiring diagram to identify all battery, ignition, accessory, wake-up, and ground circuits connected to Digital Disc Player/Changer Module D.
Verify the required voltage and ground quality according to the manufacturer's specifications.
U0190 Wiring and Communication Circuit
Inspect the wiring between Digital Disc Player/Changer Module D and the vehicle communication network.
- Check for open circuits.
- Check for short circuits to power.
- Check for short circuits to ground.
- Inspect damaged insulation.
- Check for high resistance.
- Inspect connector terminals.
- Look for corrosion or water contamination.
- Check wiring affected by vibration or previous repairs.
The exact communication network and electrical test values vary between vehicles. Use the manufacturer's wiring diagram and diagnostic procedure rather than applying one universal specification.
How to Diagnose U0190
1. Perform a Complete Vehicle Scan
Scan all available control modules with a professional scan tool. Record U0190 and any additional communication, voltage, audio, or network-related codes.
If multiple modules report communication faults, investigate common power supplies, grounds, or network problems before replacing Module D.
2. Attempt Communication With Module D
Use the scan tool to determine whether Digital Disc Player/Changer Module D can be accessed.
If the scan tool cannot communicate with Module D, check its power, ground, connectors, and communication circuits.
3. Check the Fuse Box
Inspect all fuses associated with the radio, infotainment, digital disc, and audio systems. Confirm the correct fuse rating and verify that power is actually reaching the circuit.
4. Test Module Power and Ground
Verify all module power feeds and ground circuits using the vehicle-specific wiring diagram. Repair any missing power supply or poor ground before continuing.
5. Inspect the Module Connector
Inspect the connector for corrosion, bent pins, loose terminals, damaged locking tabs, contamination, or water intrusion.
6. Test the Communication Network
If power and ground are correct, test the applicable communication circuits according to the manufacturer's diagnostic procedure.
7. Check Related Modules
Check the radio, infotainment module, audio amplifier, and other related modules for additional communication codes. Multiple U-codes may indicate a common network or power problem.
8. Consider Module Failure Last
Only after the fuse, power supply, ground, connectors, wiring, and communication network have been verified should Digital Disc Player/Changer Module D itself be considered defective.
U0190 Diagnostic Signal Flow
↓
Fuse Box
↓
Power & Ground
↓
Digital Disc Player/Changer Module D
↓
Vehicle Communication Network
↓
Radio / Infotainment Module
↓
CD / Digital Disc Changer
U0190 OBD Live Data
Use a professional scan tool to check module communication status, system voltage, network-related codes, and other available audio-system parameters.
Live data should be combined with direct electrical testing because an intermittent power, ground, connector, or communication problem may not remain visible throughout a scan.
Is U0190 Serious?
U0190 is generally a moderate-severity fault when it is isolated to the entertainment system. It may cause the digital disc or CD changer functions to stop working without directly affecting engine operation. 2
However, if U0190 appears together with multiple communication codes, the underlying electrical or vehicle-network problem should be diagnosed because the fault may extend beyond the entertainment system.
Can I Drive With U0190?
If U0190 is isolated to Digital Disc Player/Changer Module D and the vehicle operates normally, driving is generally possible. The main symptoms may be loss of CD, digital disc, or related entertainment functions.
If several control modules are reporting communication failures, the vehicle should be diagnosed promptly to identify the common power, ground, or network problem.
U0190 Repair Cost
- Electrical diagnosis: approximately $50–$150+.
- Fuse or power repair: approximately $20–$150+.
- Wiring or connector repair: approximately $50–$300+.
- Used module: approximately $50–$300+.
- New or remanufactured module: approximately $150–$800+.
- Programming or configuration: additional cost may apply.
These are general estimates only. Actual repair costs depend on the vehicle, module design, parts availability, labor rate, and programming requirements.
Digital Disc Player/Changer Module D Replacement
If Module D is confirmed to be defective, replacement access depends on the vehicle. The module may be located behind the radio, dashboard, center console, glovebox, trunk trim, or near the disc changer.
Some vehicles require programming, configuration, initialization, calibration, or security procedures after module replacement.
The replacement module should be matched to the exact vehicle, model year, audio system, and equipment configuration.
Common Repair Mistakes
- Replacing Module D before checking the fuse.
- Failing to verify module power and ground.
- Assuming U0190 automatically means the CD changer is defective.
- Ignoring connector corrosion.
- Ignoring communication wiring.
- Failing to scan other control modules.
- Replacing the module before checking related U-codes.
- Ignoring low battery voltage.
- Installing a replacement module without checking programming requirements.
Related Codes
- U0187 – Lost Communication With Digital Disc Player/Changer Module A.
- U0188 – Lost Communication With Digital Disc Player/Changer Module B.
- U0189 – Lost Communication With Digital Disc Player/Changer Module C.
- U0190 – Lost Communication With Digital Disc Player/Changer Module D.
- U0184 – Lost Communication With Radio.
- U0186 – Lost Communication With Audio Amplifier A.
- U0191 – Lost Communication With Television.
FAQ About U0190
What does U0190 mean?
U0190 means Lost Communication With Digital Disc Player/Changer Module D. The vehicle has detected that communication with Module D has been lost.
Is U0190 a generic OBD-II code?
Yes. U0190 is a generic network communication code in the U-code family. The standardized definition is Lost Communication With Digital Disc Player/Changer Module D. 3
Does U0190 mean the CD changer is bad?
No. U0190 identifies a communication problem with Digital Disc Player/Changer Module D. The cause may be a fuse, power supply, ground, connector, wiring, communication network, or failed module.
Can a blown fuse cause U0190?
Yes. If the fuse supplying Module D is open, the module may lose power and become unavailable to the vehicle communication network.
Can wiring cause U0190?
Yes. An open wire, short circuit, high resistance, damaged communication wiring, or poor connector contact can interrupt communication with Module D.
Where is Digital Disc Player/Changer Module D located?
The location varies by vehicle. It may be behind the radio, inside the dashboard, near the disc changer, in the center console, in the trunk, or integrated into another infotainment component.
Does U0190 affect engine performance?
When U0190 is isolated to the entertainment system, it generally does not affect engine performance. However, additional communication codes should be diagnosed to rule out a broader vehicle-network problem.
Does a replacement Module D need programming?
Some vehicles require programming, configuration, initialization, or calibration after replacement. The exact procedure depends on the manufacturer and vehicle configuration.
Final Takeaway
U0190 means Lost Communication With Digital Disc Player/Changer Module D. The code identifies a communication problem with Module D and does not automatically prove that the module itself has failed.
The correct diagnostic approach is to check the fuse box, power supply, ground, connectors, communication wiring, related control modules, and vehicle network before replacing Digital Disc Player/Changer Module D.
The physical CD Changer and the electronic Digital Disc Player/Changer Module D may be separate components depending on the vehicle. Always identify the exact system architecture before replacing parts.
U0190 completes the Digital Disc Player/Changer communication sequence with U0187 for Module A, U0188 for Module B, U0189 for Module C, and U0190 for Module D.