AutoCodes – Dodge – U0404 Dodge

U0404 Dodge Code - Invalid Data Received From Gear Shift Control Module 'A'

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 Gear Shift Control Module 'A', Gear Shift Control Module 'A' harness is open or shorted, Gear Shift Control Module 'A' 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: U0404 Dodge indicates Invalid Data Received From Gear Shift Control Module 'A'.
Common causes: Common causes include Faulty Gear Shift Control Module 'A', Gear Shift Control Module 'A' harness is open or shorted, Gear Shift Control Module 'A' 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 1,041

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 09, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0404 Dodge 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 Gear Shift Control Module 'A' causing its integrity to be questioned.

OBDII Code U0404 Dodge - Invalid Data Received From Gear Shift Control Module 'A' - AutoCodes.com — U0404 Dodge Code - Invalid Data Received From Gear Shift Control Module 'A'

What does this mean?

What are the Possible Causes of the DTC U0404 Dodge?

Faulty Gear Shift Control Module 'A'
Gear Shift Control Module 'A' harness is open or shorted
Gear Shift Control Module 'A' circuit poor electrical connection

How to Fix the DTC U0404 Dodge?

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 U0404 Dodge 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 U0404 Dodge Code

1. What are the common symptoms of OBDII code U0404 in a Dodge related to the Gear Shift Control Module 'A'?

- Common symptoms include erratic shifting behavior, difficulty changing gears, and the transmission going into limp mode.

2. What are possible causes of the U0404 code indicating "Invalid Data Received From Gear Shift Control Module 'A'" in a Dodge?

- Possible causes include a faulty gear shift control module, damaged wiring or connectors, software issues, or a communication network problem.

3. How can I diagnose the U0404 code in my Dodge indicating a problem with the Gear Shift Control Module 'A'?

- Diagnose the code by checking for other related trouble codes, inspecting the wiring and connectors for damage, testing the gear shift control module, and verifying the communication network integrity.

4. Are there any DIY repair tips for addressing the U0404 code in a Dodge due to issues with the Gear Shift Control Module 'A'?

- DIY repair tips include checking and repairing damaged wiring, ensuring connectors are properly connected, and resetting the system to see if the code returns.

5. Can a malfunctioning Gear Shift Control Module 'A' cause other transmission-related issues in a Dodge triggering the U0404 code?

- Yes, a malfunctioning gear shift control module can lead to various transmission problems like incorrect gear selection, harsh shifting, and even transmission failure.

6. Is it safe to continue driving my Dodge if the U0404 code related to the Gear Shift Control Module 'A' is present?

- It is not recommended to continue driving the vehicle with the U0404 code as it can lead to further transmission damage and safety hazards.

7. How much does it typically cost to repair the U0404 code caused by an issue with the Gear Shift Control Module 'A' in a Dodge?

- Repair costs can vary depending on the exact cause, but expect to pay anywhere from $200 to $800 for parts and labor.

8. Can resetting the OBDII system clear the U0404 code related to the Gear Shift Control Module 'A' in my Dodge?

- Resetting the system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to return.

9. Will the U0404 code in a Dodge reset itself after the underlying issue with the Gear Shift Control Module 'A' is fixed?

- In some cases, the code may reset itself after the problem is fixed, but it is advisable to clear the code using a diagnostic tool to ensure it does not return.

10. How important is it to address the U0404 code linked to the Gear Shift Control Module 'A' promptly in a Dodge?

- It is crucial to address the U0404 code promptly as transmission issues can worsen over time, leading to more expensive repairs and potential safety risks.