AutoCodes – Dodge – U1505 Dodge

U1505 Dodge Code - Implausible Message Data Length Received From FDCM

Quick Answer

The messages sent on the Controller Area Network (CAN) bus are distinguished by an Identifier (ID). 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: U1505 Dodge indicates Implausible Message Data Length Received From FDCM.
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 999

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 May 31, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1505 Dodge Description

The messages sent on the Controller Area Network (CAN) bus are distinguished by an Identifier (ID). Each CAN ID is defined to contain a certain number of bytes. The Transmission Control Module (TCM) verifies that it has received the proper number of bytes for each ID.

OBDII Code U1505 Dodge - Implausible Message Data Length Received From FDCM - AutoCodes.com — U1505 Dodge Code - Implausible Message Data Length Received From FDCM

What does this mean?

What are the Possible Causes of the DTC U1505 Dodge?

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 U1505 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 U1505 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 U1505 Dodge Code

1. What does the OBDII code U1505 for Dodge mean?

The code U1505 indicates an "Implausible Message Data Length Received From FDCM" error in the Dodge's onboard diagnostics system.

2. What are the common symptoms of the U1505 code in a Dodge?

Common symptoms of the U1505 code may include issues with the 4WD system, traction control system, ABS system, or other related systems in the vehicle.

3. What are possible causes of the U1505 code in a Dodge?

Possible causes of the U1505 code include faulty wiring, a malfunctioning FDCM (Final Drive Control Module), a communication error between modules, or a software glitch.

4. How can I diagnose the U1505 code in my Dodge?

Diagnosing the U1505 code typically involves using an OBDII scanner to retrieve the code, checking for any other related codes, inspecting the wiring and connections, and testing the FDCM and other relevant modules.

5. How serious is the U1505 code in a Dodge?

The U1505 code may affect the proper functioning of various vehicle systems, such as the 4WD and traction control, so it is important to address this issue promptly to prevent further complications.

6. Can I drive my Dodge with the U1505 code?

It is not recommended to drive your Dodge with the U1505 code present, as it may lead to safety and performance issues. It's best to have the vehicle inspected and repaired as soon as possible.

7. How do I repair the U1505 code in my Dodge?

Repairing the U1505 code typically involves fixing any wiring issues, replacing a faulty FDCM if necessary, ensuring proper communication between modules, and clearing the code with a diagnostic tool.

8. Will resetting the U1505 code make it go away permanently?

Simply resetting the code may temporarily clear the warning, but if the underlying issue causing the U1505 code is not addressed, it is likely to reappear. It's important to diagnose and fix the root cause of the problem.

9. Does the U1505 code affect fuel economy in a Dodge?

While the U1505 code itself may not directly impact fuel economy, if it leads to issues with the vehicle's traction control or 4WD system, it could affect overall performance, which in turn may impact fuel efficiency.

10. Can a DIY enthusiast fix the U1505 code in a Dodge?

Depending on the skill level and experience of the individual, some DIY enthusiasts may be able to address wiring issues or module replacements related to the U1505 code. However, complex diagnostics and repairs may require professional assistance.