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Engine-Codes – Generic – U0191

U0191 Code - Lost Communication With Television

Quick Answer

The U0191 diagnostic trouble code (DTC) indicates that the vehicle's control module has lost communication with the television. Common causes include Faulty wiring or connectors, Defective control module, Malfunctioning television screen. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
U0191 indicates Lost Communication With Television.
Common causes
Common causes include Faulty wiring or connectors, Defective control module, Malfunctioning television screen.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code U0191 Description

The U0191 diagnostic trouble code (DTC) indicates that the vehicle's control module has lost communication with the television. In modern vehicles, many systems are interconnected and communicate through a network known as the Controller Area Network (CAN). The television system in a vehicle may refer to the display screen for entertainment or navigation purposes.

OBDII Code U0191 - Lost Communication With Television
U0191 Code - Lost Communication With Television

Common Causes of U0191

  1. Faulty wiring or connectors
  2. Defective control module
  3. Malfunctioning television screen
  4. Problems with the CAN bus communication network

Symptoms of U0191

  1. Loss of display on the television screen
  2. Navigation system malfunction
  3. Inability to access entertainment features
  4. Warning lights related to communication issues

How to Fix U0191

  1. Inspect wiring and connectors for any damage or corrosion. Repair or replace as necessary.
  2. Check the control module for proper functioning and communication. Replace if faulty.
  3. Test the television screen for defects and replace if needed.
  4. Diagnose the CAN bus network for any communication issues and address accordingly.
  5. Clear the DTC and perform a test drive to ensure the issue has been resolved.

Cost to Fix U0191

The cost of repairing the U0191 code can vary depending on the specific cause of the communication failure. In general, the repair costs can range from $100 to $500, including parts and labor. However, it's important to note that the final cost may be higher if extensive diagnostics or component replacements are required. Additionally, labor rates at auto repair shops can vary, so it's advisable to check with local providers for a more accurate estimate.

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Code U0191 Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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