AutoCodes – Ford – P1639 2012 Ford Fusion

P1639 2012 Ford Fusion Code - Vehicle ID Block Corrupted Or Not Programmed

Quick Answer

Configurable modules accommodate a variety of vehicle options, eliminating the need for many unique modules for one vehicle line. Common causes include Reprogram Module ("Flashing"), New Powertrain Control Module (PCM) Needs programming, Incorrect Vehicle Identification (VID) configuration. 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 Reprogram Module ("Flashing"), New Powertrain Control Module (PCM) Needs programming, Incorrect Vehicle Identification (VID) configuration.
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 Popularity 3,965

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 05, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1639 2012 Ford Fusion Description

Configurable modules accommodate a variety of vehicle options, eliminating the need for many unique modules for one vehicle line. These modules must be configured when replaced as part of a repair procedure. Configurable modules should not be exchanged between vehicles since the settings are unique to each vehicle. Failure to configure a new module may result in improper operation.
The Diagnostic Trouble Code (DTC) indicates that the Vehicle Identification (VID) block is not programmed or is corrupt.

OBDII Code P1639 2012 Ford Fusion - Vehicle ID Block Corrupted Or Not Programmed - AutoCodes.com — P1639 2012 Ford Fusion Code - Vehicle ID Block Corrupted Or Not Programmed

What does this mean?

What are the Possible Causes of the DTC P1639 2012 Ford Fusion?

Reprogram Module ("Flashing")
New Powertrain Control Module (PCM) Needs programming
Incorrect Vehicle Identification (VID) configuration

How to Fix the DTC P1639 2012 Ford Fusion?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

After a new Powertrain Control Module (PCM) has been installed, the Vehicle Identification (VID) block has to be reprogrammed to the PCM.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1639 2012 Ford Fusion code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1639 2012 Ford Fusion code?

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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 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 wonâ€™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 vehicleâ€™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, itâ€™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.