AutoCodes – Generic – U11F5

U11F5 Code - Lost Communication With Compact Disc Module

Quick Answer

The primary communication network between electronic control modules is the Controller Area Network (CAN) data bus system. Common causes include Faulty External Disc Module (EDM), External Disc Module harness is open or shorted, External Disc Module circuit poor electrical connection. 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: U11F5 indicates Lost Communication With Compact Disc Module.
Common causes: Common causes include Faulty External Disc Module (EDM), External Disc Module harness is open or shorted, External Disc Module circuit poor electrical connection.
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.

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Code Popularity 4,593

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U11F5 Description

The primary communication network between electronic control modules is the Controller Area Network (CAN) data bus system. The Controller Area Network (CAN) data bus allows all electronic modules connected to the bus to share information with each other. Regardless of whether a message originates from a module on the higher speed CAN C (500K) Bus or on the lower speed bus, CAN Interior High Speed (IHS) (125K) Bus, the message structure and layout is similar, which allows the Body Control Module (BCM) to process and transfer messages between the CAN buses. The BCM stores Diagnostic Trouble Codes (DTCs) for certain bus network faults on the CAN C (500K) Bus and CAN IHS (125K) Bus.
The Diagnostic Trouble Code (DTC) sets when the Bus messages not received from the External Disc Module (EDM) for approximately ten seconds.

OBDII Code U11F5 - Lost Communication With Compact Disc Module - AutoCodes.com — U11F5 Code - Lost Communication With Compact Disc Module

What does this mean?

What are the Possible Causes of the DTC U11F5?

Faulty External Disc Module (EDM)
External Disc Module harness is open or shorted
External Disc Module circuit poor electrical connection

How to Fix the DTC U11F5?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U11F5 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the U11F5 code?

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Need Help with the Code?

Get the U11F5 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U11F5 Chrysler — Lost Communication With Compact Disc Module
U11F5 Dodge — Lost Communication With Compact Disc Module
U11F5 Fiat — Lost Communication With Compact Disc Module
U11F5 Jeep — Lost Communication With Compact Disc Module
U11F5 RAM — Lost Communication With Compact Disc Module

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.

Frequently Asked Questions about U11F5 Code

1. What are the common symptoms of OBDII code U11F5 (Lost Communication With Compact Disc Module)?

- Common symptoms include the CD player not working, radio issues, and a malfunctioning infotainment system.

2. What can cause the OBDII code U11F5 to trigger?

- The code may trigger due to a faulty compact disc module, damaged wiring, loose connections, or a malfunction in the communication network.

3. How can I diagnose the issue related to code U11F5?

- A thorough inspection of the compact disc module, checking the wiring for damage, and using a diagnostic scan tool to troubleshoot the communication network can help diagnose the problem.

4. Is it safe to continue driving with the U11F5 code present?

- It is generally safe to continue driving, but it is recommended to address the issue promptly to avoid further damage to the vehicle's entertainment system.

5. Can I repair the U11F5 code issue myself?

- Depending on your level of automotive expertise, you may be able to address the issue by checking connections, inspecting the module, and repairing any damaged wiring. However, professional assistance may be needed for more complex repairs.

6. How much does it cost to fix the U11F5 code?

- Repair costs can vary depending on the underlying cause of the issue. Simple fixes like reconnecting loose wires may be inexpensive, while replacing a faulty module or repairing damaged wiring can be more costly.

7. Will resetting the OBDII code U11F5 make the issue go away?

- Resetting the code may temporarily clear the warning, but if the underlying problem is not addressed, the code is likely to reappear. It's important to diagnose and fix the root cause of the issue.

8. Can a disconnected battery fix the U11F5 code?

- Disconnecting the battery can sometimes reset the system and clear the code temporarily. However, if the issue is not resolved, the code is likely to return once the system relearns the fault.

9. What other systems may be affected by the U11F5 code?

- In addition to the compact disc module, the U11F5 code can impact the vehicle's audio system, multimedia interface, and communication network, potentially leading to issues with other electronic components.

10. How long does it take to repair the U11F5 code issue?

- The repair time can vary depending on the complexity of the problem. Simple fixes like reconnecting a loose wire may take a short amount of time, while more involved repairs could require several hours or more.