AutoCodes – Jeep – U1502 Jeep

U1502 Jeep 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 Jeep 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 793

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

What does this mean?

What are the Possible Causes of the DTC U1502 Jeep?

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 Jeep?

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 Jeep 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.

Need more information about the U1502 Jeep code?

Need more information on how to fix the U1502 Jeep code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1502 Jeep code diagnosed by a professional: Find a repair shop in your area

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 Jeep Code

1. What are the common symptoms of the OBDII code U1502 in a Jeep related to "Implausible Message Data Length Received From TCM"?

- Common symptoms include issues with shifting gears, hesitation or jerking during acceleration, and illuminated warning lights on the dashboard.

2. What are some possible causes of the U1502 code in a Jeep?

- Possible causes include a faulty transmission control module (TCM), damaged wiring or connectors in the communication network, or a software glitch in the TCM.

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

- Diagnostic steps may involve checking for other related fault codes, inspecting the wiring harness and connectors for damage, and performing tests to determine the communication status between modules.

4. Can I still drive my Jeep with the U1502 code present?

- It is not recommended to continue driving the vehicle with the U1502 code as it can lead to potential transmission issues and further damage if left unresolved.

5. What are some repair tips for fixing the U1502 code in a Jeep?

- Repair tips may include clearing the code and performing a hard reset, checking and repairing any damaged wiring or connectors, and updating the TCM software if applicable.

6. Will resetting the code make the U1502 issue go away permanently?

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

7. Can a DIY enthusiast fix the U1502 code issue in a Jeep?

- Depending on the root cause of the U1502 code, DIY enthusiasts with knowledge of automotive diagnostics and repair may be able to address the issue, but more complex problems may require professional assistance.

8. How much does it typically cost to repair the U1502 code in a Jeep?

- The cost of repairing the U1502 code can vary widely depending on the specific cause, parts needed, and labor rates, so it is recommended to obtain multiple quotes from reputable repair shops.

9. Is the U1502 code a common issue in Jeep vehicles?

- The U1502 code related to "Implausible Message Data Length Received From TCM" is not uncommon in Jeep vehicles, especially in models with electronic transmission control systems.

10. Can the U1502 code be triggered by other underlying issues not related to the TCM?

- Yes, the U1502 code may also be triggered by problems with other control modules, communication network failures, or overall electrical system issues in the vehicle.