AutoCodes – Mercury – U1011 Mercury

U1011 Mercury Code - Invalid Internal Control Module Monitoring Data Received From ECM/PCM

Quick Answer

Network Diagnostic Trouble Code (DTC) concerns occur during module to module communication. Common causes include Faulty Control Module, Control Module harness is open or shorted, 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: U1011 Mercury indicates Invalid Internal Control Module Monitoring Data Received From ECM/PCM.
Common causes: Common causes include Faulty Control Module, Control Module harness is open or shorted, 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 582

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 16, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1011 Mercury Description

Network Diagnostic Trouble Code (DTC) concerns occur during module to module communication. Invalid data network concerns - data is transferred within the normal inter-module message but contains known invalid data. The receiving module logs a DTC related to the invalid data concern.

OBDII Code U1011 Mercury - Invalid Internal Control Module Monitoring Data Received From ECM/PCM - AutoCodes.com — U1011 Mercury Code - Invalid Internal Control Module Monitoring Data Received From ECM/PCM

What does this mean?

What are the Possible Causes of the DTC U1011 Mercury?

Faulty Control Module
Control Module harness is open or shorted
Control Module circuit poor electrical connection
Faulty Engine Control Module (ECM)/Powertrain Control Module (PCM)

How to Fix the DTC U1011 Mercury?

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 U1011 Mercury 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 U1011 Mercury Code

1. What are the common symptoms of OBDII code U1011 in a Mercury vehicle?

- Common symptoms include engine misfires, rough idling, poor fuel efficiency, and potential stalling.

2. What can cause the OBDII code U1011 to trigger in a Mercury?

- The code may be triggered by a faulty ECM/PCM, wiring issues, software glitches, or communication errors between modules.

3. How serious is the OBDII code U1011 in a Mercury vehicle?

- The code can affect the vehicle's performance and fuel efficiency, and if left unresolved, it may lead to more severe drivability issues.

4. Is it safe to continue driving with the OBDII code U1011 present in a Mercury?

- It is not recommended to drive with the code present, as it can impact the vehicle's performance and potentially cause further damage if left unaddressed.

5. How can I diagnose the OBDII code U1011 in my Mercury vehicle?

- Diagnosis typically involves using a professional OBDII scanner to retrieve the code, checking for any related codes, and conducting a thorough inspection of the ECM/PCM system.

6. What are some repair tips for addressing the OBDII code U1011 in a Mercury?

- Repair tips may include checking and repairing any damaged wiring, updating software, resetting the ECM/PCM, or replacing the control module if necessary.

7. Can I reset the OBDII code U1011 in my Mercury without fixing the underlying issue?

- While you can clear the code temporarily, it will likely return if the underlying issue is not addressed, so it's recommended to diagnose and fix the problem.

8. How much does it typically cost to repair the OBDII code U1011 in a Mercury vehicle?

- Repair costs can vary depending on the specific cause of the issue, but they may range from a simple wiring repair to a more involved ECM/PCM replacement.

9. Will the OBDII code U1011 cause my Mercury to fail an emissions test?

- Yes, the code can potentially cause your vehicle to fail an emissions test due to its impact on engine performance and emissions control systems.

10. Can a DIY enthusiast fix the OBDII code U1011 issue in a Mercury, or is professional help necessary?

- Depending on the cause of the issue, some DIY enthusiasts with the right tools and knowledge may be able to address the problem, but in more complex cases, professional help may be necessary.