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U1502 Chrysler Code - Implausible Message Data Length Received From TCM

Quick Answer

The U1502 Chrysler code indicates that the Body Control Module (BCM) has received an implausible message data length from the Transmission Control Module (TCM). Common causes include Faulty wiring or connectors between BCM and TCM, Malfunctioning TCM, Software glitches in the communication system. 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 Chrysler indicates Implausible Message Data Length Received From TCM.
Common causes
Common causes include Faulty wiring or connectors between BCM and TCM, Malfunctioning TCM, Software glitches in the communication system.
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 11, 2024
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Code U1502 Chrysler Description

The U1502 Chrysler code indicates that the Body Control Module (BCM) has received an implausible message data length from the Transmission Control Module (TCM). Essentially, this means that there is a communication error between the BCM and TCM, leading to incorrect or abnormal data being transmitted. This can have a significant impact on the vehicle's performance and overall functionality.

OBDII Code U1502 Chrysler - Implausible Message Data Length Received From TCM
U1502 Chrysler Code - Implausible Message Data Length Received From TCM

Common Causes of U1502 Chrysler

  1. Faulty wiring or connectors between BCM and TCM
  2. Malfunctioning TCM
  3. Software glitches in the communication system
  4. Defective BCM
  5. Electrical interference or poor grounding

Symptoms of U1502 Chrysler

  1. Erratic shifting patterns
  2. Transmission slippage
  3. Poor fuel economy
  4. Harsh or delayed gear shifts
  5. Illumination of the Check Engine Light

How to Fix U1502 Chrysler

  1. Perform a comprehensive diagnostic scan to retrieve the specific error codes and pinpoint the source of the communication issue.
  2. Inspect and test the wiring, connectors, and communication modules between the BCM and TCM for any signs of damage or malfunction.
  3. Check for software updates or reprogramming that may address communication errors.
  4. Replace any faulty wiring, connectors, modules, or components identified during the diagnostic process.
  5. Clear the error codes, reset the system, and perform a test drive to ensure that the communication issue has been resolved.

Cost to Fix U1502 Chrysler

The typical repair costs for addressing the U1502 Chrysler code can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts and labor for this repair could range from $200 to $600 or more. However, it is essential to note that the actual cost can be higher or lower based on factors such as location, vehicle make and model, and the labor rates of the auto repair shop. It is recommended to obtain quotes from local shops to get a more accurate estimate for this repair.

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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 Chrysler Code

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

- Common symptoms include erratic shifting, transmission slipping, illuminated Check Engine Light, and potential loss of communication with the transmission control module (TCM).

2. What could be the possible causes of OBDII code U1502 in a Chrysler vehicle?

- The code U1502 can be triggered by issues such as a faulty TCM, damaged wiring or connectors in the communication network, software glitches, or a defective CAN bus system.

3. How can I diagnose OBDII code U1502 in my Chrysler vehicle?

- Diagnosis typically involves using a professional OBDII scanner to retrieve the code, checking for other related codes, inspecting the TCM and its connections, and testing the communication network for faults.

4. Is it safe to continue driving with OBDII code U1502 present in my Chrysler vehicle?

- It is generally not recommended to drive with this code present, as it can lead to transmission issues and potentially unsafe driving conditions. It is advisable to address the problem promptly.

5. What are some repair tips for fixing OBDII code U1502 in a Chrysler vehicle?

- Repair tips may include checking and repairing any damaged wiring or connectors, updating TCM software if necessary, replacing a faulty TCM, or addressing any underlying CAN bus system problems.

6. Can a DIY enthusiast fix OBDII code U1502 in a Chrysler vehicle, or should it be done by a professional mechanic?

- While some basic checks like inspecting connections can be done by a DIY enthusiast, resolving complex issues related to the TCM or communication network may require the expertise of a professional mechanic.

7. How much can I expect to pay to fix OBDII code U1502 in a Chrysler vehicle?

- The cost of fixing this code can vary depending on the underlying issue. It may range from a simple wiring repair costing a couple of hundred dollars to a TCM replacement or software update costing several hundred to over a thousand dollars.

8. Will resetting the OBDII code U1502 in my Chrysler vehicle make it go away permanently?

- Simply resetting the code without addressing the root cause will not make it disappear permanently. The issue causing the code needs to be diagnosed and fixed to prevent it from reoccurring.

9. Can extreme weather conditions affect the occurrence of OBDII code U1502 in a Chrysler vehicle?

- Yes, extreme temperatures or moisture can potentially impact the electrical connections and components involved in the communication network, leading to the triggering of code U1502.

10. Are there any recalls or technical service bulletins related to OBDII code U1502 for Chrysler vehicles?

- It's advisable to check with the nearest Chrysler dealership or online resources for any recalls or technical service bulletins related to code U1502, as manufacturers sometimes release updates or remedies for such issues.

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