AutoCodes – Nissan – U0140 2012 Nissan Versa

U0140 2012 Nissan Versa 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 2012 Nissan Versa 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 3,670

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 2012 Nissan Versa 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 2012 Nissan Versa - Lost Communication With Body Control Module - AutoCodes.com — U0140 2012 Nissan Versa Code - Lost Communication With Body Control Module

What does this mean?

What are the Possible Causes of the DTC U0140 2012 Nissan Versa?

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 2012 Nissan Versa?

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 2012 Nissan Versa 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 2012 Nissan Versa 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 2012 Nissan Versa Code

1. What does the OBDII code U0140 mean on a 2012 Nissan Versa?

- The U0140 code indicates that there is a communication problem between the vehicle's electronic control module (ECM) and the body control module (BCM).

2. What are common symptoms of the U0140 code in a 2012 Nissan Versa?

- Common symptoms include issues with power windows, door locks not working properly, interior lights malfunctioning, and other electrical component failures.

3. What are possible causes of the U0140 code in a 2012 Nissan Versa?

- The U0140 code can be triggered by a faulty body control module, wiring issues, a bad connection, or a malfunctioning electronic control module.

4. How do I diagnose the U0140 code in my 2012 Nissan Versa?

- Diagnosing the U0140 code typically involves checking the wiring connections between the ECM and BCM, inspecting for any damaged wires, and using a diagnostic scanner to communicate with the modules.

5. Can I still drive my 2012 Nissan Versa with the U0140 code present?

- While it may be possible to drive the vehicle with the U0140 code, it is not recommended as the communication issue can affect critical systems like airbags and anti-lock brakes.

6. How can I repair the U0140 code in my 2012 Nissan Versa?

- Repairing the U0140 code may involve fixing any damaged wiring, ensuring proper connections between the ECM and BCM, or replacing the body control module if necessary.

7. Is it safe to reset the U0140 code in my 2012 Nissan Versa using an OBDII scanner?

- It is safe to reset the code using an OBDII scanner, but it is important to address the underlying communication issue to prevent the code from reoccurring.

8. Can a DIY enthusiast fix the U0140 code in a 2012 Nissan Versa?

- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair the U0140 code, but complex electrical issues may require professional assistance.

9. What is the typical cost to repair the U0140 code on a 2012 Nissan Versa at a dealership?

- The cost of repairing the U0140 code at a dealership can vary based on the extent of the issue, but it may involve diagnostic fees, labor costs, and potentially replacing the body control module.

10. How can I prevent the U0140 code from appearing again in my 2012 Nissan Versa?

- To prevent the U0140 code from reoccurring, it is important to regularly inspect and maintain the vehicle's electrical system, ensuring proper connections and addressing any wiring issues promptly.