U147B Code - Implausible Data Received From Battery Monitor Module
Quick Answer
The U147B 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 wiring or connections between the BMM and the vehicle's computer, Malfunctioning Battery Monitor Module, Issues with the battery or charging 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
- U147B indicates Implausible Data Received From Battery Monitor Module.
- Common causes
- Common causes include Faulty wiring or connections between the BMM and the vehicle's computer, Malfunctioning Battery Monitor Module, Issues with the battery or charging 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.
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Code U147B Description
The U147B 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 state of charge, voltage, and temperature, as well as managing the battery's charging and discharging processes. When the vehicle's computer receives data that is inconsistent or outside of normal parameters from the BMM, it triggers the U147B code.
Common Causes of U147B
- Faulty wiring or connections between the BMM and the vehicle's computer
- Malfunctioning Battery Monitor Module
- Issues with the battery or charging system
- Software glitches in the vehicle's computer
- Corrosion or damage to electrical components related to the battery monitoring system
Symptoms of U147B
- Check engine light illuminated on the dashboard
- Erratic battery voltage readings
- Inconsistent battery charging
- Difficulty starting the vehicle
- Electrical system malfunctions
How to Fix U147B
- Begin by conducting a thorough inspection of the wiring and connections between the BMM and the vehicle's computer. Repair or replace any damaged or faulty components.
- Test the Battery Monitor Module to determine if it is functioning correctly. Replace the BMM if necessary.
- Check the battery and charging system for any issues, such as a weak battery or a faulty alternator. Address any problems found during the inspection.
- Clear the DTC and reset the vehicle's computer to see if the issue persists. If the U147B code returns, further diagnostics may be required to pinpoint the exact cause of the problem.
- Test drive the vehicle to verify that the repairs have resolved the issue and ensure that the battery monitoring system is functioning correctly.
Cost to Fix U147B
The cost of repairing a U147B DTC 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 can range from $100 to $500. This estimate includes the cost of diagnostic testing, replacement components (such as a new Battery Monitor Module), and labor charges. Additionally, it is important to consider the specific diagnosis time and labor rates at auto repair shops, which can vary based on location, vehicle make and model, and engine type. It is advisable to consult with a professional mechanic to get a more accurate estimate for the repair.
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Code U147B Information for Specific Makes
- U147B Chrysler — Implausible Data Received From Battery Monitor Module
- U147B Dodge — Implausible Data Received From Battery Monitor Module
- U147B Jeep — Implausible Data Received From Battery Monitor Module
- U147B RAM — Implausible Data Received From Battery Monitor Module
Frequently Asked Questions about U147B Code
1. What are the common symptoms of OBDII code U147B?
- Common symptoms include the check engine light coming on, issues with battery monitoring system, and potential electrical system malfunctions.
2. What does the OBDII code U147B indicate?
- U147B indicates that the vehicle's onboard computer has detected implausible data received from the Battery Monitor Module.
3. What are the possible causes of OBDII code U147B?
- Possible causes include a faulty Battery Monitor Module, wiring issues, poor electrical connections, or a malfunction in the battery sensor.
4. How can I diagnose OBDII code U147B?
- Diagnosis typically involves using a diagnostic scanner to retrieve the code, checking the battery monitor module for faults, inspecting wiring and connections, and testing the battery sensor.
5. Can OBDII code U147B cause any other problems in the vehicle?
- Yes, unresolved issues related to U147B can lead to inaccurate battery monitoring, potential electrical system failures, and overall reliability concerns.
6. Is it safe to drive with OBDII code U147B present?
- It is generally not recommended to drive with this code unresolved, as it may lead to unexpected electrical system issues or battery-related problems.
7. How can I repair OBDII code U147B?
- Repair options may include replacing the Battery Monitor Module, repairing or replacing faulty wiring, ensuring proper electrical connections, or addressing issues with the battery sensor.
8. Will resetting the fault codes make OBDII code U147B disappear?
- Resetting the fault codes may temporarily clear the code, but it will likely reappear if the underlying issue triggering U147B is not addressed.
9. Can a DIY enthusiast fix OBDII code U147B at home?
- Depending on the level of expertise and access to tools, some DIY enthusiasts may be able to diagnose and repair simple issues related to U147B, such as checking and cleaning electrical connections.
10. How much does it typically cost to repair OBDII code U147B at a professional auto repair shop?
- The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $500 or more, including parts and labor.
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