AutoCodes – Dodge – U1502 Dodge

U1502 Dodge Code - Implausible Message Data Length Received From TCM

Quick Answer

The Diagnostic Trouble Code (DTC) will set if the Anti-Lock Brakes Module detects bus messages from the Transmission Control Module (TCM) are of improper data length. 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: U1502 Dodge indicates Implausible Message Data Length Received From TCM.
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 578

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 U1502 Dodge Description

The Diagnostic Trouble Code (DTC) will set if the Anti-Lock Brakes Module detects bus messages from the Transmission Control Module (TCM) are of improper data length.

OBDII Code U1502 Dodge - Implausible Message Data Length Received From TCM - AutoCodes.com — U1502 Dodge Code - Implausible Message Data Length Received From TCM

What does this mean?

What are the Possible Causes of the DTC U1502 Dodge?

Faulty Transmission Control Module (TCM)
Transmission Control Module harness is open or shorted
Transmission Control Module circuit poor electrical connection
Faulty Anti-Lock Brakes (ABS) Module

How to Fix the DTC U1502 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 U1502 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 U1502 Dodge Code

1. What are the common symptoms of OBDII code U1502 in a Dodge vehicle?

- Common symptoms include erratic shifting behavior, transmission issues, and possible warning lights on the dashboard.

2. What can cause the U1502 code to trigger in a Dodge vehicle?

- The U1502 code is typically triggered by a communication error between the Transmission Control Module (TCM) and other control modules in the vehicle.

3. How can I diagnose the U1502 code in my Dodge vehicle?

- Diagnosis involves using a professional OBDII scanner to retrieve the specific code, checking for other related codes, and inspecting the TCM and related wiring for any signs of damage.

4. Can a loose or damaged wiring harness cause the U1502 code in a Dodge?

- Yes, a loose or damaged wiring harness connecting the TCM to other modules can cause the U1502 code due to poor communication.

5. What are some repair tips for addressing the U1502 code in a Dodge vehicle?

- Repair tips may include checking and repairing any damaged wiring, ensuring proper connections, resetting the code, and performing a test drive to confirm the issue is resolved.

6. Is it safe to continue driving with the U1502 code present in a Dodge?

- It is generally not recommended to continue driving with the U1502 code present, as it can lead to further transmission issues and potential safety risks.

7. Can a software update fix the U1502 code in a Dodge vehicle?

- In some cases, a software update from the dealership or a qualified technician may help resolve the communication error causing the U1502 code.

8. How long does it typically take to repair the U1502 code in a Dodge?

- The repair time can vary depending on the underlying cause of the code, but it may take anywhere from a few hours to a full day to diagnose and address the issue.

9. Will resetting the U1502 code make it go away permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue causing the U1502 code is not fixed, it is likely to return.

10. Can a DIY enthusiast fix the U1502 code in a Dodge, or is professional help necessary?

- While some basic troubleshooting steps can be taken by a DIY enthusiast, resolving the U1502 code may require advanced diagnostic tools and expertise, so professional help is often recommended.