AutoCodes – Generic – U11D6

U11D6 Code - Lost Engine Status Message

Quick Answer

This diagnostic checks for the availability of the Engine Status signal which is sent by the Powertrain Control Module (PCM) via a CAN message. Common causes include Faulty Powertrain Control Module (PCM), Faulty Transmission Control Module (TCM). 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: U11D6 indicates Lost Engine Status Message.
Common causes: Common causes include Faulty Powertrain Control Module (PCM), Faulty Transmission Control Module (TCM).
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 498

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 U11D6 Description

This diagnostic checks for the availability of the Engine Status signal which is sent by the Powertrain Control Module (PCM) via a CAN message. The Engine Status possible values include the following: 0) engine stopped, 1) engine starting, 2) engine idling and unstable, 3) engine idling and stable, 4) engine running and unlimited RPM, 5) engine running and limited RPM and 7) Signal Not Available (SNA). The diagnostic checks the signal availability by checking if the received value is not equal to the SNA default value. When the signal is not available, the PCM sends an SNA default value to the TCM. If the TCM reads this value then the Diagnostic Trouble Code (DTC) U11D6 is set.

OBDII Code U11D6 - Lost Engine Status Message - AutoCodes.com — U11D6 Code - Lost Engine Status Message

What does this mean?

What are the Possible Causes of the DTC U11D6?

Faulty Powertrain Control Module (PCM)
Faulty Transmission Control Module (TCM)

How to Fix the DTC U11D6?

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 U11D6 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 U11D6 code?

Need more information on how to fix the U11D6 code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific Makes

U11D6 Chrysler — Lost Engine Status Message
U11D6 Dodge — Lost Engine Status Message
U11D6 Fiat — Lost Engine Status Message
U11D6 Jeep — Lost Engine Status Message
U11D6 RAM — Lost Engine Status 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 U11D6 Code

1. What does the OBDII code U11D6 mean?

The U11D6 code indicates a communication issue where the Engine Control Module (ECM) has lost a critical engine status message from another module, typically over the CAN bus network.

2. What are the common symptoms of the U11D6 code?

Symptoms may include the check engine light turning on, reduced engine performance, erratic shifting (if applicable), or no noticeable symptoms in some cases.

3. What causes the U11D6 code to appear?

Common causes include faulty wiring or connectors in the CAN bus network, a malfunctioning ECM or other control module, or software issues causing communication errors.

4. Can I drive my car with a U11D6 code?

Driving with a U11D6 code is possible if there are no immediate performance issues, but itâ€™s recommended to address the problem promptly to avoid further complications.

5. How do I diagnose the U11D6 code?

Diagnosis involves checking for additional codes, inspecting the CAN bus wiring and connectors, testing the modules for proper communication, and using a scan tool to monitor data flow.

6. What repairs are needed to fix the U11D6 code?

Repairs may include repairing or replacing damaged wiring, cleaning or reconnecting loose connectors, or reprogramming or replacing a faulty module.

7. Can a low battery cause the U11D6 code?

Yes, a low or weak battery can disrupt module communication and trigger the U11D6 code, so checking battery voltage is a good first step.

8. What tools are required to fix the U11D6 code?

Youâ€™ll need an OBDII scan tool, a multimeter for checking electrical connections, and possibly manufacturer-specific diagnostic tools for module communication testing.

9. Is a software update needed to resolve the U11D6 code?

In some cases, updating the software on the affected module(s) may resolve communication issues and clear the U11D6 code.

10. How much does it cost to fix the U11D6 code?

The cost varies depending on the root cause, ranging from $50â€“$100 for basic diagnostics to $500 or more for module replacement or extensive wiring repairs.