AutoCodesRAM – U11C6 RAM

U11C6 RAM Code - Lost Engine Torque Request Message

Quick Answer

This diagnostic determines the availability of the static indicated engine torque signal, the engine friction torque signal, and the indicated driver torque request signal sent by the Powertrain Control Module (PCM) via two Controller Area Network (CAN) messages. Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control 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
U11C6 RAM indicates Lost Engine Torque Request Message.
Common causes
Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control 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 503
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 28, 2020
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Code U11C6 RAM Description

This diagnostic determines the availability of the static indicated engine torque signal, the engine friction torque signal, and the indicated driver torque request signal sent by the Powertrain Control Module (PCM) via two Controller Area Network (CAN) messages. The diagnostic determines the availability by checking the valid bit. When the signals are not available, the PCM sends a Signal Not Available (SNA) default value to the Transmission Control Module (TCM). If the TCM reads this value then the Diagnostic Trouble Code (DTC) U11C6 is set.
OBDII Code U11C6 RAM - Lost Engine Torque Request Message - AutoCodes.com
U11C6 RAM Code - Lost Engine Torque Request Message

What are the Possible Causes of the DTC U11C6 RAM?

  • Faulty Transmission Control Module (TCM)
  • Transmission Control Module harness is open or shorted
  • Transmission Control Module circuit poor electrical connection

How to Fix the DTC U11C6 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 U11C6 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 U11C6 RAM Code

1. What does the OBDII code U11C6 mean?

U11C6 indicates that the vehicle's Powertrain Control Module (PCM) has lost communication with the Engine Control Module (ECM) regarding the torque request message.

2. What are the common symptoms of the U11C6 code?

Symptoms may include reduced engine performance, a lack of throttle response, engine hesitation, or the illumination of the check engine light.

3. What causes the U11C6 code to appear?

Common causes include faulty wiring or connectors between the PCM and ECM, software issues, a malfunctioning PCM/ECM, or a communication bus failure.

4. Can I drive my vehicle with a U11C6 code?

While the vehicle may still be drivable, reduced performance and responsiveness could pose safety risks. It’s best to diagnose and repair the issue promptly.

5. How do you diagnose the U11C6 code?

Diagnosis involves checking for damaged wiring, loose or corroded connectors, ensuring proper voltage supply to the ECM/PCM, and using a scan tool to monitor communication signals.

6. What are the most common repairs for a U11C6 code?

Repairs may include fixing damaged wiring, cleaning or replacing connectors, reprogramming the ECM/PCM, or replacing a faulty module.

7. Can a weak battery cause the U11C6 code?

Yes, a weak or failing battery can lead to communication issues between modules, potentially triggering the U11C6 code.

8. Is the U11C6 code specific to RAM vehicles?

While U11C6 is commonly associated with RAM vehicles, similar communication-related codes can appear in other makes and models.

9. How much does it cost to fix the U11C6 code?

Repair costs can vary widely, ranging from $50 for minor wiring repairs to over $1,000 if a PCM or ECM replacement is needed.

10. Can updating the software resolve the U11C6 code?

In some cases, a software update for the ECM or PCM can resolve communication issues and clear the U11C6 code.

Discuss the causes and fixes for U11C6 RAM OBDII Code

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