What Does U0191 Mean?
The vehicle's communication network has lost contact with the television display module. This code appears in vehicles equipped with rear-seat entertainment or navigation systems with TV capability.
Common Causes
35%
Faulty television module internal failure
30%
Damaged or corroded wiring harness to TV module
20%
Poor ground connection at module
10%
CAN bus network issue affecting multiple modules
5%
Blown fuse or loss of power supply to module
Diagnostic Steps
1
Step 1: Check fuse for television module and verify power supply at module connector
2
Step 2: Inspect wiring harness and connectors for damage, corrosion, or loose connections
3
Step 3: Using scan tool, monitor CAN bus communication and check if other modules are communicating properly
4
Step 4: Test ground connections at TV module with multimeter for continuity and resistance
5
Step 5: If all connections are good, test TV module by substitution or send for bench testing
Estimated Repair Cost
$150 - $1,200
Parts + labor, varies by vehicle and location
The vehicle's communication network has lost contact with the television display module. This code appears in vehicles equipped with rear-seat entertainment or navigation systems with TV capability.
The most common cause of U0191 (Lost Communication With Television) is: Faulty television module internal failure
Typical repair costs for U0191 range from $150 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
No direct safety impact as this only affects entertainment functionality. Vehicle remains safe to operate normally.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0191 to identify the root cause.
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Quick Info
Category
Network
System
Infotainment/Entertainment System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
