AutoCodes – Lincoln – U0140 Lincoln

U0140 Lincoln Code - Lost Communication With Body Control Module

Quick Answer

The Powertrain Control Module (PCM) continuously monitors Controller Area Network (CAN) for messages from Body Control Module (BCM). Common causes include Communication error, Faulty Body Control Module (BCM), Body Control Module (BCM) harness is open or shorted. 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: U0140 Lincoln indicates Lost Communication With Body Control Module.
Common causes: Common causes include Communication error, Faulty Body Control Module (BCM), Body Control Module (BCM) harness is open or shorted.
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 4,491

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 01, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0140 Lincoln Description

The Powertrain Control Module (PCM) continuously monitors Controller Area Network (CAN) for messages from Body Control Module (BCM). The Diagnostic Trouble Code (DTC) U0140 sets when the PCM does not receive the BCM message within the defined amount of time.

OBDII Code U0140 Lincoln - Lost Communication With Body Control Module - AutoCodes.com — U0140 Lincoln Code - Lost Communication With Body Control Module

What does this mean?

What are the Possible Causes of the DTC U0140 Lincoln?

Communication error
Faulty Body Control Module (BCM)
Body Control Module (BCM) harness is open or shorted
Body Control Module (BCM) circuit poor electrical connection

How to Fix the DTC U0140 Lincoln?

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 U0140 Lincoln 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 U0140 Lincoln code?

Need more information on how to fix the U0140 Lincoln code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0140 Lincoln code diagnosed by a professional: Find a repair shop in your area

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 U0140 Lincoln Code

1. What are common symptoms of OBDII code U0140 in a Lincoln indicating a lost communication with the Body Control Module (BCM)?

- Common symptoms include issues with power windows, door locks, interior lights, and other body control functions not working properly.

2. What are some potential causes of OBDII code U0140 in a Lincoln?

- Possible causes include a faulty BCM, wiring issues, loose connections, or a software malfunction in the vehicle's communication network.

3. How can I diagnose the cause of OBDII code U0140 in my Lincoln?

- Diagnosing this code typically involves using a professional OBDII scanner to check for communication errors with the BCM, inspecting wiring for damage, and testing BCM functionality.

4. Can I continue driving my Lincoln with OBDII code U0140 present?

- It is not recommended to continue driving with this code present, as it may affect crucial body control functions and lead to safety concerns.

5. How can I repair OBDII code U0140 indicating a lost communication with the Body Control Module in my Lincoln?

- Repairing this code usually involves fixing any wiring issues, ensuring proper connections, resetting the BCM, or replacing the BCM if necessary.

6. Are there any DIY tips for troubleshooting OBDII code U0140 in a Lincoln?

- DIY tips include checking for loose connections, inspecting wiring for damage, and resetting the BCM by disconnecting the battery for a few minutes.

7. Is it recommended to seek professional help for fixing OBDII code U0140 in a Lincoln?

- Yes, it is advisable to consult a professional mechanic or dealership with experience in diagnosing and repairing communication issues with the BCM in a Lincoln.

8. Can extreme weather conditions contribute to triggering OBDII code U0140 in a Lincoln?

- Yes, extreme temperatures or environmental factors can potentially affect the electronic components and connections related to the BCM, leading to communication errors.

9. How long does it take to repair OBDII code U0140 in a Lincoln?

- The repair time can vary depending on the exact cause of the issue, but it typically takes a few hours to diagnose and fix the problem with the BCM communication.

10. Can regular maintenance help prevent OBDII code U0140 from occurring in a Lincoln?

- While regular maintenance cannot guarantee prevention, keeping up with scheduled inspections and addressing any electrical issues promptly can help reduce the likelihood of encountering this code.