AutoCodes – Generic – U11C6

U11C6 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 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 2,042

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 Apr 28, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U11C6 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 - Lost Engine Torque Request Message - AutoCodes.com — U11C6 Code - Lost Engine Torque Request Message

What does this mean?

What are the Possible Causes of the DTC U11C6?

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?

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 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 U11C6 code?

Need more information on how to fix the U11C6 code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific Makes

U11C6 Chrysler — Lost Engine Torque Request Message
U11C6 Dodge — Lost Engine Torque Request Message
U11C6 Jeep — Lost Engine Torque Request Message
U11C6 RAM — Lost Engine Torque Request Message

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 Code

What does the OBDII code U11C6 mean?

U11C6 indicates a "Lost Engine Torque Request Message," which typically means that the Engine Control Module (ECM) is not receiving a proper signal from the Transmission Control Module (TCM) regarding engine torque requests.

What are common symptoms of the U11C6 code?

Common symptoms may include reduced engine power, a check engine light, erratic transmission shifting, or the vehicle entering limp mode.

What could cause the U11C6 code to appear?

Causes may include communication issues between the ECM and TCM, faulty wiring or connectors, a malfunctioning TCM, or an issue with the engine itself that affects torque delivery.

How can I diagnose the U11C6 code?

Start by checking for any other stored trouble codes, inspect wiring and connections between the ECM and TCM, and use a scan tool to monitor live data for abnormalities in torque request signals.

What repairs are commonly needed for a U11C6 code?

Repairs may involve fixing or replacing damaged wiring or connectors, reprogramming or replacing the TCM, or addressing other underlying issues that affect engine performance.

Can I drive my vehicle with a U11C6 code?

It is not recommended to drive the vehicle with this code present, as it may lead to reduced engine performance and could potentially cause further damage to the transmission or engine components.

Is the U11C6 code serious?

Yes, it can be serious as it affects engine performance and transmission functionality. It's advisable to address the issue promptly to avoid further complications.

How can I clear the U11C6 code after repairs?

After performing the necessary repairs, you can clear the code using an OBDII scanner. Alternatively, disconnecting the vehicleâ€™s battery for a short period may also reset the system.

Are there any specific vehicle models prone to the U11C6 code?

While the U11C6 code can appear in various makes and models, it is more commonly reported in vehicles with complex electronic systems and integrated transmission controls. Always refer to manufacturer-specific information for detailed insights.