AutoCodes – RAM – U11F6 RAM

U11F6 RAM Code - Lost Communication With Convergenece Telematics Module

Quick Answer

The primary communication network between electronic control modules is the Controller Area Network (CAN) data bus system. Common causes include Faulty Convergence Telematics Module (CTM), Convergence Telematics Module harness is open or shorted, Convergence Telematics 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: U11F6 RAM indicates Lost Communication With Convergenece Telematics Module.
Common causes: Common causes include Faulty Convergence Telematics Module (CTM), Convergence Telematics Module harness is open or shorted, Convergence Telematics 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 609

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 U11F6 RAM 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 Convergence Telematics Module (CTM) for approximately ten seconds.

OBDII Code U11F6 RAM - Lost Communication With Convergenece Telematics Module - AutoCodes.com — U11F6 RAM Code - Lost Communication With Convergenece Telematics Module

What does this mean?

What are the Possible Causes of the DTC U11F6 RAM?

Faulty Convergence Telematics Module (CTM)
Convergence Telematics Module harness is open or shorted
Convergence Telematics Module circuit poor electrical connection

How to Fix the DTC U11F6 RAM?

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 U11F6 RAM 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.

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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 U11F6 RAM Code

1. What does OBDII code U11F6 mean?

U11F6 indicates a lost communication issue between the vehicle's main control modules and the Convergence Telematics Module (CTM), which handles telematics and remote services.

2. What are the symptoms of code U11F6?

Symptoms may include a malfunctioning infotainment system, issues with remote start or navigation, loss of hands-free calling, or the check engine light turning on.

3. What causes code U11F6 to appear?

This code can be triggered by faulty wiring or connections, a defective Convergence Telematics Module, software glitches, or a failing CAN (Controller Area Network) bus.

4. Can a weak battery cause code U11F6?

Yes, a weak or failing battery can disrupt communication between modules and potentially trigger this code.

5. How do you diagnose code U11F6?

Start by checking the wiring and connectors for damage or corrosion, verify the battery voltage, and use a scan tool to check for other related communication codes.

6. Can I drive with code U11F6 active?

While you can typically drive with this code, you may experience limited functionality of telematics features like navigation, emergency assistance, or remote services.

7. How is code U11F6 fixed?

Repairs may involve inspecting and repairing the wiring, updating the CTM software, replacing the CTM if faulty, or addressing any underlying network issues.

8. Is code U11F6 specific to RAM vehicles?

While U11F6 is commonly associated with RAM vehicles, other brands using a similar telematics system may also encounter this code.

9. How much does it cost to repair code U11F6?

Repair costs vary depending on the issue, ranging from simple wiring fixes (low cost) to replacing the CTM (which could cost several hundred dollars).

10. Can a software update resolve code U11F6?

Yes, in some cases, a software update for the CTM or related modules can resolve communication issues and clear the code.