AutoCodes – Nissan – U0140 2011 Nissan Sentra

U0140 2011 Nissan Sentra Code - Lost Communication With Body Control Module

Quick Answer

The Controller Area Network (CAN) is a serial communication line for real time applications. Common causes include CAN communication line between Body Control Module (BCM) and Engine Control Module (ECM), 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 2011 Nissan Sentra indicates Lost Communication With Body Control Module.
Common causes: Common causes include CAN communication line between Body Control Module (BCM) and Engine Control Module (ECM), 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 3,444

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 2011 Nissan Sentra Description

The Controller Area Network (CAN) is a serial communication line for real time applications. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads the required data only. The Diagnostic Trouble Code (DTC) sets when the Engine Control Module (ECM) is not transmitting or receiving CAN communication signal of OBDII (emission related diagnosis) with Body Control Module (BCM) for 2 seconds or more.

OBDII Code U0140 2011 Nissan Sentra - Lost Communication With Body Control Module - AutoCodes.com — U0140 2011 Nissan Sentra Code - Lost Communication With Body Control Module

What does this mean?

What are the Possible Causes of the DTC U0140 2011 Nissan Sentra?

CAN communication line between Body Control Module (BCM) and Engine Control Module (ECM)
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 2011 Nissan Sentra?

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 2011 Nissan Sentra 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 2011 Nissan Sentra code?

Need more information on how to fix the U0140 2011 Nissan Sentra code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 U0140 2011 Nissan Sentra Code

1. What does the OBDII code U0140 on a 2011 Nissan Sentra indicate?

The code U0140 means "Lost Communication With Body Control Module" on a 2011 Nissan Sentra.

2. What are the common symptoms of U0140 in a 2011 Nissan Sentra?

Common symptoms of U0140 may include issues with power door locks, interior lights not working, malfunctioning windows, and other electrical system problems.

3. What are some possible causes of U0140 in a 2011 Nissan Sentra?

Possible causes of U0140 include a faulty body control module, damaged wiring or connectors, a drained or faulty battery, or a software-related issue.

4. How can I diagnose the U0140 code on a 2011 Nissan Sentra?

Diagnosing the U0140 code typically involves using a professional OBDII scanner to retrieve the specific details of the code and checking the body control module for any visible damage or loose connections.

5. Can I still drive my 2011 Nissan Sentra with the U0140 code present?

It is not recommended to drive your vehicle with the U0140 code present, as it may lead to further electrical issues and potential safety hazards.

6. How can I repair the U0140 code on my 2011 Nissan Sentra?

Repairing the U0140 code may involve replacing the body control module, repairing any damaged wiring or connectors, ensuring a proper battery connection, or performing a software update.

7. Is it possible to reset the U0140 code on a 2011 Nissan Sentra?

Resetting the U0140 code can be done with an OBDII scanner by clearing the code after addressing the underlying issue. However, the code may return if the root cause is not fixed.

8. Can a DIY enthusiast fix the U0140 code on a 2011 Nissan Sentra?

While some basic troubleshooting steps can be taken by a DIY enthusiast, diagnosing and repairing the U0140 code may require professional expertise and specialized tools.

9. How much does it typically cost to repair the U0140 code on a 2011 Nissan Sentra?

The cost of repairing the U0140 code can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

10. Is the U0140 code a common issue in 2011 Nissan Sentras?

While the U0140 code may not be extremely common in 2011 Nissan Sentras, it can still occur due to various electrical system malfunctions or failures.