AutoCodes – Ford – P1640 1999 Ford F150

P1640 1999 Ford F150 Code - Powertrain DTCs Available in Another Module

Quick Answer

Vehicles using a secondary Engine Control Module can request that the Powertrain Control Module (PCM) illuminate the Malfunction Indicator Lamp (MIL) when a failure occurs which affects emissions. Common causes include Diagnostic Trouble Code (DTC) stored in a secondary module, which requested the MIL to be turned on. 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: P1640 1999 Ford F150 indicates Powertrain DTCs Available in Another Module.
Common causes: Common causes include Diagnostic Trouble Code (DTC) stored in a secondary module, which requested the MIL to be turned on.
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 3,821

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Sep 04, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1640 1999 Ford F150 Description

Vehicles using a secondary Engine Control Module can request that the Powertrain Control Module (PCM) illuminate the Malfunction Indicator Lamp (MIL) when a failure occurs which affects emissions.

OBDII Code P1640 1999 Ford F150 - Powertrain DTCs Available in Another Module - AutoCodes.com — P1640 1999 Ford F150 Code - Powertrain DTCs Available in Another Module

What does this mean?

What are the Possible Causes of the DTC P1640 1999 Ford F150?

Diagnostic Trouble Code (DTC) stored in a secondary module, which requested the MIL to be turned on.

How to Fix the DTC P1640 1999 Ford F150?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1640 1999 Ford F150 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 P1640 1999 Ford F150 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 P1640 1999 Ford F150 Code

1. What does OBDII code P1640 on a 1999 Ford F150 mean?

The code P1640 indicates that there are Powertrain Diagnostic Trouble Codes (DTCs) available in another module.

2. What are the common symptoms of OBDII code P1640 on a 1999 Ford F150?

Common symptoms may include the malfunction indicator light (MIL) being illuminated on the dashboard and possible performance issues with the vehicle.

3. What are the possible causes of OBDII code P1640 on a 1999 Ford F150?

Possible causes of code P1640 include communication issues between different control modules in the vehicle, a faulty PCM (Powertrain Control Module), or wiring problems.

4. How can I diagnose OBDII code P1640 on a 1999 Ford F150?

Diagnosing code P1640 usually involves using a professional OBDII scanner to retrieve the specific Powertrain DTCs stored in another module. Further testing may be required to pinpoint the exact cause.

5. Can I drive my 1999 Ford F150 with OBDII code P1640?

It is generally not recommended to drive the vehicle extensively with the MIL illuminated, as there may be underlying issues affecting the performance and safety of the vehicle.

6. How can I repair OBDII code P1640 on my 1999 Ford F150?

Repairing code P1640 involves addressing the root cause, which may include repairing faulty wiring, replacing a malfunctioning control module, or resolving communication issues between modules.

7. Will resetting the OBDII code P1640 on a 1999 Ford F150 solve the problem?

Simply resetting the code may temporarily turn off the MIL, but it will not fix the underlying issue causing code P1640. It is important to diagnose and repair the root cause.

8. Can a DIYer fix OBDII code P1640 on a 1999 Ford F150?

Depending on the DIYer's skill level and access to tools, some may be able to address simpler causes like checking and repairing loose connections or damaged wiring. However, complex issues may require professional assistance.

9. Is OBDII code P1640 a serious problem on a 1999 Ford F150?

While code P1640 itself may not directly affect the drivability of the vehicle, it is essential to address the underlying issues to ensure optimal performance and prevent potential damage to other components.

10. How much does it cost to fix OBDII code P1640 on a 1999 Ford F150?

The cost of fixing code P1640 can vary depending on the cause of the issue, parts needed for repair, and labor costs. It is advisable to consult with a mechanic or dealership for an accurate estimate.