What Does U0489 Mean?
Invalid or corrupted data is being received from the secondary digital disc player/changer module (designated as B) over the vehicle communication network. This affects the second disc player in multi-player entertainment systems.
Common Causes
45%
Faulty disc player B module with internal circuit board failure
25%
Damaged wiring or corroded connectors at player B location
15%
Network communication circuit issue specific to player B branch
10%
Power supply fault or insufficient voltage to player B module
5%
Module software corruption or programming error
Diagnostic Steps
1
Step 1: Test disc player B functionality by attempting to load and play media
2
Step 2: Check voltage supply and ground at player B connector (should read battery voltage)
3
Step 3: Inspect connector and wiring for damage, particularly at rear seat entertainment locations
4
Step 4: Verify network communication signals at player B using oscilloscope or scan tool data
5
Step 5: Replace player B module if all electrical tests pass and updates are applied
Estimated Repair Cost
$150 - $700
Parts + labor, varies by vehicle and location
Invalid or corrupted data is being received from the secondary digital disc player/changer module (designated as B) over the vehicle communication network. This affects the second disc player in multi-player entertainment systems.
The most common cause of U0489 (Invalid Data Received From Digital Disc Player/Changer Module "B") is: Faulty disc player B module with internal circuit board failure
Typical repair costs for U0489 range from $150 to $700, depending on the vehicle, location, and whether you do it yourself or go to a shop.
No safety concerns. Secondary disc player will not function properly but does not affect vehicle operation or primary systems.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0489 to identify the root cause.
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Quick Info
Category
Network
System
Infotainment/Rear Entertainment System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
