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U1508 Dodge Code - Implausible Message Data Length Received From ESM

Quick Answer

The U1508 diagnostic trouble code (DTC) for Dodge vehicles indicates an issue with the Electronic Shift Module (ESM) where an implausible message data length has been received. Common causes include Faulty Electronic Shift Module (ESM), Wiring or connection issues between the ESM and other components, Software glitches or programming errors in the ESM. 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 Dodge indicates Implausible Message Data Length Received From ESM.
Common causes
Common causes include Faulty Electronic Shift Module (ESM), Wiring or connection issues between the ESM and other components, Software glitches or programming errors in the ESM.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code U1508 Dodge Description

The U1508 diagnostic trouble code (DTC) for Dodge vehicles indicates an issue with the Electronic Shift Module (ESM) where an implausible message data length has been received. The ESM is a crucial component responsible for controlling the transmission shifting process in the vehicle. When this code is triggered, it means that the ESM has received data that does not align with the expected message length, leading to communication errors within the system.

OBDII Code U1508 Dodge - Implausible Message Data Length Received From ESM
U1508 Dodge Code - Implausible Message Data Length Received From ESM

Common Causes of U1508 Dodge

  1. Faulty Electronic Shift Module (ESM)
  2. Wiring or connection issues between the ESM and other components
  3. Software glitches or programming errors in the ESM
  4. Electrical interference or signal disruption affecting communication with the ESM

Symptoms of U1508 Dodge

  1. Erratic shifting behavior
  2. Harsh transitions between gears
  3. Transmission getting stuck in a specific gear
  4. Issues with starting or accelerating properly

How to Fix U1508 Dodge

  1. Begin by conducting a thorough inspection of the ESM and its connections to identify any visible damage or loose wiring.
  2. Use a diagnostic scan tool to retrieve specific error codes related to the ESM and transmission system.
  3. Check for software updates or reprogramming options provided by the manufacturer to address any known issues with the ESM.
  4. Test the ESM's functionality by simulating different transmission operations to pinpoint the source of the communication error.
  5. If necessary, replace the ESM with a new unit and ensure proper calibration and programming to restore normal transmission function.

Cost to Fix U1508 Dodge

The typical repair costs for addressing the U1508 code in a Dodge vehicle can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, replacing the Electronic Shift Module (ESM) and addressing any related wiring or connection issues can range from $300 to $800, including parts and labor. However, it is essential to note that diagnostic time and labor rates at auto repair shops can fluctuate based on various factors, so it is advisable to inquire about local rates for a more accurate estimate. Additionally, rates may be higher at dealerships or metropolitan areas and lower at independent shops.

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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 U1508 Dodge Code

1. What does the OBDII code U1508 for Dodge mean?

The code U1508 indicates an "Implausible Message Data Length Received From ESM" error in the electronic shift module (ESM) of a Dodge vehicle.

2. What are the common symptoms of the U1508 code in a Dodge?

Common symptoms of the U1508 code may include issues with shifting gears, transmission malfunctions, and dashboard warning lights illuminating.

3. What are the possible causes of the U1508 code in a Dodge?

Possible causes of the U1508 code include a faulty electronic shift module (ESM), wiring issues, software glitches, or communication errors within the vehicle's network.

4. How do I diagnose the U1508 code in my Dodge?

Diagnosing the U1508 code typically involves using a diagnostic scanner to retrieve the code, checking for other related trouble codes, inspecting the wiring and connections to the ESM, and testing the ESM itself for functionality.

5. Can I still drive my Dodge with the U1508 code present?

It is not recommended to drive your Dodge with the U1508 code present, as it can lead to transmission issues and potential safety hazards. It's best to address the problem promptly.

6. How can I repair the U1508 code in my Dodge?

Repairing the U1508 code may involve replacing the electronic shift module (ESM), repairing any wiring or connection issues, updating software, or resetting the code with a diagnostic tool.

7. Is the U1508 code a serious issue in a Dodge?

The U1508 code should be addressed promptly to prevent potential transmission problems and ensure the vehicle operates safely and efficiently.

8. Can a DIY enthusiast fix the U1508 code in a Dodge?

Depending on your skill level and access to tools, some DIY enthusiasts may be able to address the U1508 code by following repair guides or tutorials. However, complex issues may require professional assistance.

9. How much does it cost to fix the U1508 code in a Dodge?

The cost of fixing the U1508 code can vary depending on the specific cause of the issue, parts required, labor costs, and whether you choose to DIY or seek professional help. It's recommended to obtain quotes from mechanics for an accurate estimate.

10. Will resetting the U1508 code make it go away permanently?

Simply resetting the U1508 code may temporarily clear the error, but if the underlying issue is not addressed, the code is likely to reappear. It's crucial to diagnose and repair the root cause of the problem to prevent recurrence.

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