AutoCodes – Nissan – U0101 2012 Nissan Versa

U0101 2012 Nissan Versa Code - Lost Communication with Transmission Control Module

Quick Answer

The Controller Area Network (CAN) is a serial communication line for real-time applications. Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission 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: U0101 2012 Nissan Versa indicates Lost Communication with Transmission Control Module .
Common causes: Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission 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 8,481

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 Mar 23, 2023

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0101 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.
If the Transmission Control Module (TCM) cannot communicate with the Engine Control Module (ECM), the TCM will conclude that there is a malfunction in the CAN system, illuminate the MIL, and set a Diagnostic Trouble Code (DTC).

OBDII Code U0101 2012 Nissan Versa - Lost Communication with Transmission Control Module - AutoCodes.com — U0101 2012 Nissan Versa Code - Lost Communication with Transmission Control Module

What does this mean?

What are the Possible Causes of the DTC U0101 2012 Nissan Versa?

Faulty Transmission Control Module (TCM)
Transmission Control Module harness is open or shorted
Transmission Control Module circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC U0101 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 U0101 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.

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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 U0101 2012 Nissan Versa Code

1. What does the OBDII code U0101 mean on a 2012 Nissan Versa?

The U0101 code indicates a communication problem between the Engine Control Module (ECM) and the Transmission Control Module (TCM).

2. What are the common symptoms of U0101 on a 2012 Nissan Versa?

Common symptoms include transmission shifting issues, lack of power, stalling, and problems with the vehicle's drivability.

3. What are some possible causes of U0101 on a 2012 Nissan Versa?

Potential causes of the U0101 code include faulty wiring or connectors, a malfunctioning TCM, a defective ECM, or a communication network issue.

4. How can I diagnose the U0101 code on my 2012 Nissan Versa?

Diagnosing the U0101 code typically involves checking the wiring and connectors between the ECM and TCM, testing the modules for functionality, and inspecting the communication network for faults.

5. Can I continue driving my 2012 Nissan Versa with the U0101 code?

It is not recommended to drive the vehicle with the U0101 code present, as it can lead to further transmission and drivability issues.

6. How can the U0101 code on a 2012 Nissan Versa be repaired?

Repairing the U0101 code may involve repairing or replacing damaged wiring, connectors, or modules, as well as addressing any underlying communication network issues.

7. Can a DIY enthusiast fix the U0101 code on a 2012 Nissan Versa?

While some basic checks like inspecting wiring and connectors can be done by a DIY enthusiast, diagnosing and repairing the U0101 code may require specialized tools and expertise.

8. Will resetting the trouble codes clear the U0101 code on a 2012 Nissan Versa?

Resetting the trouble codes may temporarily clear the U0101 code, but if the underlying issue is not fixed, the code is likely to reappear.

9. How much does it cost to repair the U0101 code on a 2012 Nissan Versa?

The cost of repairing the U0101 code can vary depending on the specific cause of the issue, the extent of repairs needed, and whether professional help is required.

10. Is the U0101 code a common problem in 2012 Nissan Versa vehicles?

The U0101 code is not a common issue in 2012 Nissan Versa vehicles, but it can still occur due to various factors affecting the communication between the ECM and TCM.