AutoCodes – Ford – U0109 2010 Ford Fusion

U0109 2010 Ford Fusion Code - Lost Communication With Fuel Pump Control Module

Quick Answer

The Powertrain Control Module (PCM) monitors the Fuel Pump Monitor (FPM) circuit for the presence of a duty cycled signal. Common causes include Fuel pump monitor circuit open or short to ground, Fuel pump monitor circuit short to voltage, Damaged Inertia Fuel Shutoff (IFS) switch (if equipped). 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: U0109 2010 Ford Fusion indicates Lost Communication With Fuel Pump Control Module .
Common causes: Common causes include Fuel pump monitor circuit open or short to ground, Fuel pump monitor circuit short to voltage, Damaged Inertia Fuel Shutoff (IFS) switch (if equipped).
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 3,720

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 Mar 29, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0109 2010 Ford Fusion Description

The Powertrain Control Module (PCM) monitors the Fuel Pump Monitor (FPM) circuit for the presence of a duty cycled signal. If the FPM circuit is fixed at a low or high voltage, the PCM begins to increment a counter. The test fails when the PCM is still not detecting a duty cycled signal on the FPM circuit after a calibrated amount of time.

OBDII Code U0109 2010 Ford Fusion - Lost Communication With Fuel Pump Control Module - AutoCodes.com — U0109 2010 Ford Fusion Code - Lost Communication With Fuel Pump Control Module

What does this mean?

What are the Possible Causes of the DTC U0109 2010 Ford Fusion?

Fuel pump monitor circuit open or short to ground
Fuel pump monitor circuit short to voltage
Damaged Inertia Fuel Shutoff (IFS) switch (if equipped)
Damaged fuel pump control module relay

How to Fix the DTC U0109 2010 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U0109 2010 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 U0109 2010 Ford Fusion code?

Need more information on how to fix the U0109 2010 Ford Fusion code? Get Access to Factory Service Manuals

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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 U0109 2010 Ford Fusion Code

1. What are the common symptoms of OBDII code U0109 in a 2010 Ford Fusion?

- Common symptoms include difficulty starting the vehicle, engine stalling, and issues with fuel delivery.

2. What does the OBDII code U0109 "Lost Communication With Fuel Pump Control Module" mean for a 2010 Ford Fusion?

- This code indicates a communication problem between the vehicle's ECM (Engine Control Module) and the fuel pump control module.

3. What are the possible causes of the U0109 code in a 2010 Ford Fusion?

- Possible causes include a faulty fuel pump control module, damaged wiring or connectors, a blown fuse, or a software issue.

4. How can I diagnose the U0109 code in a 2010 Ford Fusion?

- Diagnosing the U0109 code involves checking the fuel pump control module for power and ground, inspecting the wiring for damage, and using a scan tool to communicate with the module.

5. Can I still drive my 2010 Ford Fusion with the U0109 code present?

- It is not recommended to drive the vehicle with the U0109 code present, as it can lead to potential fuel delivery issues and engine stalling.

6. How can I repair the U0109 code in my 2010 Ford Fusion?

- Repair options include replacing the fuel pump control module, repairing damaged wiring or connectors, checking and replacing fuses if necessary, and reprogramming the ECM if required.

7. Will resetting the trouble codes make the U0109 code disappear permanently?

- Resetting the trouble codes may temporarily clear the U0109 code, but if the underlying issue is not addressed, the code is likely to reappear.

8. Is it safe to attempt DIY repairs for the U0109 code in a 2010 Ford Fusion?

- DIY repairs can be attempted for simple tasks like checking fuses or inspecting wiring, but more complex tasks like module replacement may require professional assistance.

9. How much does it cost to repair the U0109 code in a 2010 Ford Fusion?

- The cost of repairing the U0109 code can vary depending on the specific issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

10. Can the U0109 code in a 2010 Ford Fusion cause any long-term damage if left unrepaired?

- If left unrepaired, the U0109 code can potentially lead to fuel pump failure, engine stalling, and other related issues, which can cause further damage to the vehicle over time.