AutoCodes – Nissan – U0402 Nissan

U0402 Nissan Code - Invalid Data Received From Transmission Control Module

Quick Answer

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. 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: U0402 Nissan indicates Invalid Data Received From 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 2,707

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 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0402 Nissan Description

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Operating information and commands are exchanged among the devices. The devices have programmed information about what messages are needed to be exchanged on the serial data circuits. Some devices are constantly receiving information from other devices through serial data communication network. The invalid data Diagnostic Trouble Code (DTC) will be set when a receiving device detects a discrepancy in the information it receives from the Transmission Control Module (TCM) causing its integrity to be questioned.

OBDII Code U0402 Nissan - Invalid Data Received From Transmission Control Module - AutoCodes.com — U0402 Nissan Code - Invalid Data Received From Transmission Control Module

What does this mean?

What are the Possible Causes of the DTC U0402 Nissan?

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

How to Fix the DTC U0402 Nissan?

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 U0402 Nissan 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 U0402 Nissan Code

1. What are the common symptoms of OBDII code U0402 in a Nissan?

- Common symptoms include transmission shifting issues, harsh shifting, hesitation during acceleration, and illuminated warning lights on the dashboard.

2. What does the OBDII code U0402 indicate in a Nissan?

- The code U0402 indicates that the engine control module (ECM) has detected invalid data being received from the transmission control module (TCM).

3. What are the possible causes of the U0402 code in a Nissan?

- The possible causes include damaged wiring or connectors between the ECM and TCM, a faulty TCM, a software issue, or a malfunctioning ECM.

4. How can I diagnose the U0402 code in my Nissan?

- Diagnosing the U0402 code usually involves using a diagnostic scanner to retrieve the code, checking for any related codes, inspecting the wiring and connectors, and testing the TCM and ECM.

5. Can the U0402 code be cleared/reset in a Nissan?

- Yes, the U0402 code can be cleared/reset using a diagnostic scanner after the underlying issue has been diagnosed and repaired.

6. How serious is the U0402 code in a Nissan?

- The U0402 code should be addressed promptly as it can cause drivability issues and potentially lead to further damage if left unresolved.

7. What are some repair tips for fixing the U0402 code in a Nissan?

- Repair tips may include checking and repairing any damaged wiring or connectors, replacing a faulty TCM or ECM, updating software if necessary, and clearing the code after repairs are completed.

8. Can I drive my Nissan with the U0402 code present?

- It is not recommended to drive your Nissan with the U0402 code present, as it can lead to transmission problems and potentially unsafe driving conditions.

9. How much does it typically cost to repair the U0402 code in a Nissan?

- The cost of repairing the U0402 code can vary depending on the specific cause of the issue, but it may involve expenses for parts, labor, and diagnostic fees.

10. Is the U0402 code specific to Nissan vehicles only?

- While the U0402 code is commonly associated with Nissan vehicles, it can also occur in other makes and models that use OBDII systems with similar diagnostic trouble codes.