What Does U0187 Mean?
The primary CD/DVD player or changer module is not communicating on the vehicle network. This module controls disc media playback in the entertainment system.
Common Causes
40%
Failed disc player/changer module electronics
25%
Corroded or damaged connector and wiring to disc player
20%
Power supply or ground circuit fault to module
15%
Communication bus network malfunction
Diagnostic Steps
1
Step 1: Check for power and ground at disc player module connector with multimeter
2
Step 2: Inspect module connector for bent pins, corrosion, or moisture damage
3
Step 3: Verify communication bus voltage levels at module connector
4
Step 4: Test module by swapping with known good unit if available or check module on bench
5
Step 5: Replace disc player module if circuits are intact but communication cannot be restored
Estimated Repair Cost
$150 - $700
Parts + labor, varies by vehicle and location
The primary CD/DVD player or changer module is not communicating on the vehicle network. This module controls disc media playback in the entertainment system.
The most common cause of U0187 (Lost Communication With Digital Disc Player/Changer Module "A") is: Failed disc player/changer module electronics
Typical repair costs for U0187 range from $150 to $700, depending on the vehicle, location, and whether you do it yourself or go to a shop.
No safety concerns. CD/DVD playback functionality will be unavailable to occupants.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0187 to identify the root cause.
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Quick Info
Category
Network
System
Infotainment/Audio System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
