AutoCodes – Generic – U1508

U1508 Code - Implausible Message Data Length Received From ESM

Quick Answer

The messages sent on the Controller Area Network (CAN) bus are distinguished by an Identifier (ID). Common causes include Faulty Electronic Shift Module (ESM), Electronic Shift Module harness is open or shorted, Electronic Shift 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: U1508 indicates Implausible Message Data Length Received From ESM.
Common causes: Common causes include Faulty Electronic Shift Module (ESM), Electronic Shift Module harness is open or shorted, Electronic Shift 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 4,900

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 U1508 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. The Diagnostic Trouble Code (DTC) will set when the TCM detects an incorrect CAN ID from the Electronic Shift Module (ESM).

OBDII Code U1508 - Implausible Message Data Length Received From ESM - AutoCodes.com — U1508 Code - Implausible Message Data Length Received From ESM

What does this mean?

What are the Possible Causes of the DTC U1508?

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

How to Fix the DTC U1508?

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 U1508 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 U1508 code?

Need more information on how to fix the U1508 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1508 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U1508 Chrysler — Implausible Message Data Length Received From ESM
U1508 Dodge — Implausible Message Data Length Received From ESM
U1508 Jeep — Implausible Message Data Length Received From ESM
U1508 RAM — Implausible Message Data Length Received From ESM

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 U1508 Code

1. What are the common symptoms of OBDII code U1508?

- Common symptoms include issues with the electronic shifter module, such as difficulty shifting gears or the gear indicator not displaying correctly.

2. What can cause the OBDII code U1508 to be triggered?

- The code U1508 is typically triggered when the Electronic Shifter Module (ESM) sends an implausible message data length to the Powertrain Control Module (PCM).

3. How serious is the OBDII code U1508?

- While the code itself may not cause immediate safety concerns, it can lead to potential transmission shifting problems if left unresolved.

4. How can I diagnose the OBDII code U1508?

- Diagnosing code U1508 involves using a professional OBDII scanner to retrieve the code, followed by testing the communication between the ESM and PCM.

5. What are some repair tips for fixing OBDII code U1508?

- Repairing this code often involves checking the wiring connections between the ESM and PCM, ensuring they are secure and free of damage or corrosion.

6. Can I drive my vehicle with the OBDII code U1508?

- It is not recommended to drive your vehicle with the U1508 code present, as it may lead to transmission-related issues that could compromise safety and reliability.

7. How much does it cost to repair OBDII code U1508?

- The cost of repairing this code can vary depending on the underlying cause, but it may involve replacing faulty wiring, connectors, or the ESM itself, potentially ranging from $200 to $800 or more.

8. Can a DIY enthusiast fix the OBDII code U1508?

- While some DIY enthusiasts may have the skills to diagnose and repair this code, it is recommended to consult with a professional mechanic to ensure the issue is properly resolved.

9. How long does it take to repair OBDII code U1508?

- The repair time for code U1508 can vary based on the extent of the issue and the availability of parts, but it may take anywhere from a few hours to a full day to complete the repair.

10. Is it common for OBDII code U1508 to recur after repair?

- If the root cause of the code is not properly addressed during the repair, there is a possibility that code U1508 may recur. It is crucial to ensure thorough diagnostics and effective repair procedures are carried out to prevent recurrence.