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U147B Chrysler Code - Implausible Data Received From Battery Monitor Module

Quick Answer

The U147B Chrysler diagnostic trouble code (DTC) indicates that the vehicle's onboard computer has detected implausible data being received from the Battery Monitor Module (BMM). Common causes include Faulty Battery Monitor Module (BMM), Poor electrical connections, Damaged wiring. 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
U147B Chrysler indicates Implausible Data Received From Battery Monitor Module.
Common causes
Common causes include Faulty Battery Monitor Module (BMM), Poor electrical connections, Damaged wiring.
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 14, 2024
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Code U147B Chrysler Description

The U147B Chrysler diagnostic trouble code (DTC) indicates that the vehicle's onboard computer has detected implausible data being received from the Battery Monitor Module (BMM). The BMM is responsible for monitoring the battery's voltage, current, and temperature to ensure proper charging and discharging operations. When the BMM sends data that is inconsistent or incorrect, it can lead to various issues with the vehicle's electrical system and overall performance.

OBDII Code U147B Chrysler - Implausible Data Received From Battery Monitor Module
U147B Chrysler Code - Implausible Data Received From Battery Monitor Module

Common Causes of U147B Chrysler

  1. Faulty Battery Monitor Module (BMM)
  2. Poor electrical connections
  3. Damaged wiring
  4. Malfunctioning battery
  5. Software issues with the vehicle's onboard computer

Symptoms of U147B Chrysler

  1. Erratic charging behavior
  2. Dimming lights
  3. Difficulty starting the engine
  4. Stalling while driving
  5. Battery warning light illuminated on the dashboard

How to Fix U147B Chrysler

  1. Begin by conducting a thorough inspection of the battery, BMM, and related wiring for any visible damage or loose connections.
  2. Use a diagnostic scan tool to retrieve and clear the DTC, then monitor the BMM data to check for consistency and proper functioning.
  3. Test the battery's voltage, current, and temperature to ensure they are within the manufacturer's specifications.
  4. Replace the BMM if it is found to be faulty, ensuring that the new module is properly calibrated and programmed to the vehicle.
  5. Clear the DTC from the vehicle's memory and perform a final test drive to confirm that the issue has been resolved.

Cost to Fix U147B Chrysler

The typical repair costs for addressing the U147B Chrysler DTC can vary depending on the specific cause of the issue. In general, replacing a faulty Battery Monitor Module (BMM) can range from $200 to $500, including parts and labor. Additional costs may apply if there are other underlying issues with the electrical system that need to be addressed. It is recommended to consult with a qualified mechanic or auto repair shop to obtain a more accurate estimate based on the vehicle's make and model, as well as the extent of the repairs needed. Keep in mind that labor rates can vary, so it's advisable to inquire about rates in your local area for a more precise cost estimate.

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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 U147B Chrysler Code

1. What are the common symptoms of OBDII code U147B in a Chrysler vehicle?

The common symptoms of OBDII code U147B include issues with the battery monitor module, such as erratic readings or failure to communicate with other modules.

2. What does the OBDII code U147B "Implausible Data Received From Battery Monitor Module" mean?

This code indicates that the powertrain control module (PCM) has detected abnormal or inconsistent data coming from the battery monitor module.

3. What are some possible causes of OBDII code U147B in a Chrysler vehicle?

Possible causes of code U147B can include a faulty battery monitor module, wiring issues, poor connections, or a problem with the PCM itself.

4. How can I diagnose the OBDII code U147B in my Chrysler vehicle?

Diagnosing code U147B typically involves checking the battery monitor module for proper operation, inspecting the wiring and connections, and using a diagnostic scanner to communicate with the modules.

5. Can I drive my Chrysler vehicle with OBDII code U147B?

It is generally not recommended to drive your vehicle with an unresolved U147B code, as it can lead to further electrical issues or potential drivability problems.

6. How can I repair OBDII code U147B in my Chrysler vehicle?

Repairing code U147B usually involves addressing the underlying cause, such as replacing the battery monitor module, repairing wiring issues, or reprogramming the PCM.

7. Is it safe to reset the OBDII code U147B in my Chrysler vehicle?

While you can reset the code using a diagnostic scanner, it is important to address the root cause of the issue to prevent the code from reappearing.

8. Can a DIY enthusiast fix OBDII code U147B, or should I seek professional help?

Depending on your experience and tools, you may be able to diagnose and repair code U147B yourself. However, seeking professional help is recommended for complex electrical issues.

9. How much does it cost to fix OBDII code U147B in a Chrysler vehicle?

The cost of fixing code U147B can vary depending on the cause of the issue, parts needed, and labor rates. It is advisable to obtain quotes from automotive professionals for an accurate estimate.

10. How can I prevent OBDII code U147B from occurring in the future?

To prevent code U147B, it is essential to maintain your vehicle's electrical system, regularly check the battery monitor module, and address any warning signs promptly to avoid potential issues.

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