P1639 2012 Ford Fusion Code - Vehicle ID Block Corrupted Or Not Programmed
Quick Answer
The diagnostic trouble code P1639 for a 2012 Ford Fusion indicates that the Vehicle ID block is either corrupted or not programmed correctly. Common causes include Software Glitch: A software malfunction within the ECM can lead to the corruption of the Vehicle ID block, Electrical Fault: Issues with the vehicle's electrical system, such as a short circuit or wiring problem, can cause the Vehicle ID block to become corrupted, Faulty ECM: A defective ECM can also trigger this code if it is unable to store or retrieve the necessary information in the Vehicle ID block. 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
- P1639 2012 Ford Fusion indicates Vehicle ID Block Corrupted Or Not Programmed.
- Common causes
- Common causes include Software Glitch: A software malfunction within the ECM can lead to the corruption of the Vehicle ID block, Electrical Fault: Issues with the vehicle's electrical system, such as a short circuit or wiring problem, can cause the Vehicle ID block to become corrupted, Faulty ECM: A defective ECM can also trigger this code if it is unable to store or retrieve the necessary information in the Vehicle ID block.
- 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 P1639 2012 Ford Fusion Description
The diagnostic trouble code P1639 for a 2012 Ford Fusion indicates that the Vehicle ID block is either corrupted or not programmed correctly. The Vehicle ID block is a crucial component of the vehicle's electronic control module (ECM) that stores important information about the vehicle, such as VIN (Vehicle Identification Number), calibration data, and other key parameters. When this block is corrupted or not programmed, it can lead to various issues with the vehicle's performance and functionality.
Common Causes of P1639 2012 Ford Fusion
- Software Glitch: A software malfunction within the ECM can lead to the corruption of the Vehicle ID block.
- Electrical Fault: Issues with the vehicle's electrical system, such as a short circuit or wiring problem, can cause the Vehicle ID block to become corrupted.
- Faulty ECM: A defective ECM can also trigger this code if it is unable to store or retrieve the necessary information in the Vehicle ID block.
- Improper Programming: If the Vehicle ID block was not programmed correctly during a previous repair or replacement, it can result in this code being triggered.
- Water Damage: Exposure to water or moisture can damage the ECM and lead to the corruption of the Vehicle ID block.
Symptoms of P1639 2012 Ford Fusion
- Check Engine Light: The most common symptom associated with this code is the illumination of the Check Engine Light on the dashboard.
- Reduced Engine Performance: The vehicle may experience a decrease in engine power and overall performance.
- Transmission Issues: The transmission may shift erratically or experience delays in shifting gears.
- Poor Fuel Efficiency: The vehicle may consume more fuel than usual due to the ECM not functioning optimally.
- Inability to Start: In severe cases, the vehicle may have difficulty starting or may not start at all.
How to Fix P1639 2012 Ford Fusion
- Diagnose the Issue: Use a diagnostic scanner to retrieve the trouble code and perform a thorough inspection of the ECM and related components.
- Check Wiring and Connections: Inspect the wiring harness and connections for any signs of damage, corrosion, or loose connections.
- Reprogram the ECM: If the issue is related to a software glitch or improper programming, reprogramming the ECM with the correct data may resolve the problem.
- Replace the ECM: If the ECM is found to be faulty, it may need to be replaced with a new or refurbished unit.
- Clear the Code: After completing the repair process, clear the trouble code from the ECM memory and perform a test drive to ensure the issue has been resolved.
Cost to Fix P1639 2012 Ford Fusion
The typical repair costs for addressing a P1639 code on a 2012 Ford Fusion can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts for reprogramming the ECM or replacing a faulty ECM can range from $200 to $800. Labor costs at auto repair shops typically range from $80 to $150 per hour, with the total repair time varying based on the complexity of the repair. Therefore, the total cost for resolving this issue could range from $300 to $1200 or more, depending on the specific circumstances. It is advisable to consult with a qualified mechanic or dealership to get an accurate estimate based on your vehicle's condition and location.
Tech Notes for P1639 2012 Ford Fusion
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Frequently Asked Questions about P1639 2012 Ford Fusion Code
1. What does the OBDII code P1639 mean on a 2012 Ford Fusion?
P1639 indicates that the Vehicle Identification Number (VIN) stored in the Powertrain Control Module (PCM) is corrupted or not programmed correctly.
2. What are the common symptoms of code P1639 in a Ford Fusion?
Symptoms may include an illuminated Check Engine Light, inability to pass emissions testing, or issues with certain vehicle functions that rely on VIN recognition.
3. What causes the P1639 code to appear?
Common causes include a corrupted or missing Vehicle Identification Number (VIN) in the PCM, a failed PCM, or issues during reprogramming or replacement of the module.
4. Can a weak or dead battery trigger the P1639 code?
A weak or dead battery typically won’t trigger P1639, but power surges or voltage irregularities during battery replacement or PCM programming can potentially corrupt VIN data.
5. How is the P1639 code diagnosed?
A technician will use a scan tool to check the VIN stored in the PCM and compare it to the actual vehicle’s VIN. They may also inspect the PCM for damage or programming errors.
6. Can I drive my 2012 Ford Fusion with the P1639 code?
While the vehicle may still drive, it’s not recommended as the code can affect emissions compliance and may cause other operational issues.
7. How do you fix the P1639 code?
The most common fix is reprogramming the PCM with the correct VIN using a compatible scan tool. If the PCM is damaged, it may need replacement and reprogramming.
8. Does clearing the code with a scanner fix the P1639 issue?
No, clearing the code will only temporarily erase it. The underlying issue, such as incorrect or missing VIN data, must be resolved for the code to stay off.
9. How much does it cost to fix the P1639 code?
Costs can vary depending on whether the issue is a simple reprogramming (typically $100-$200) or requires PCM replacement (which can exceed $600 including parts and labor).
10. Can a DIY mechanic fix the P1639 code at home?
Fixing P1639 typically requires specialized equipment to reprogram the PCM, so it is best handled by a professional technician or dealership.
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