AutoCodes – Ford – P0103 2007 Ford Fusion

P0103 2007 Ford Fusion Code - Mass or Volume Air Flow Circuit High Input

Quick Answer

The Mass Air Flow (MAF) sensor is placed in the stream of the intake air. Common causes include Dirty Air Filter, Dirty Mass Air Flow (MAF) Sensor, Intake air leaks. 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: P0103 2007 Ford Fusion indicates Mass or Volume Air Flow Circuit High Input.
Common causes: Common causes include Dirty Air Filter, Dirty Mass Air Flow (MAF) Sensor, Intake air leaks.
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 2,382

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 18, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0103 2007 Ford Fusion Description

The Mass Air Flow (MAF) sensor is placed in the stream of the intake air. It measures the intake flow rate by measuring a part of the entire intake flow. It consists of a hot film that is supplied with electric current from the Engine Control Module (ECM). The ECM controls the temperature of the hot film by a certain amount. The heat generated by the hot film is reduced as the intake air flows around it. The more air, the greater the heat loss. Therefore, the ECM must supply more electric current to maintain the temperature of the hot film as air flow increases. The ECM detects the air flow by means of this current change. The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the MAF Sensor Signal is more than the factory specifications.

OBDII Code P0103 2007 Ford Fusion - Mass or Volume Air Flow Circuit High Input - AutoCodes.com — P0103 2007 Ford Fusion Code - Mass or Volume Air Flow Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0103 2007 Ford Fusion?

Dirty Air Filter
Dirty Mass Air Flow (MAF) Sensor
Intake air leaks
Faulty Mass Air Flow Sensor
Mass Air Flow Sensor harness is open or shorted
Mass Air Flow Sensor circuit poor electrical connection

How to Fix the DTC P0103 2007 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

Before replacing the Mass Air Flow (MAF) Sensor, try replacing the air filter and cleaning the Mass Air Flow Sensor with low compress air or Mass Air Flow Sensor Cleaner. Reset code and drive vehicle. If the code comes back, you must replace the Mass Air Flow Sensor to fix the problem.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0103 2007 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 P0103 2007 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 P0103 2007 Ford Fusion Code

1. What does the OBDII code P0103 on a 2007 Ford Fusion mean?

The code P0103 indicates a high input in the Mass or Volume Air Flow Circuit, commonly related to an issue with the MAF sensor.

2. What are the common symptoms of OBDII code P0103 on a 2007 Ford Fusion?

Common symptoms of P0103 may include poor engine performance, rough idling, stalling, decreased fuel efficiency, and in some cases, the vehicle may not start.

3. What are the possible causes of OBDII code P0103 on a 2007 Ford Fusion?

The high input in the Mass or Volume Air Flow Circuit (P0103) on a 2007 Ford Fusion can be caused by a faulty MAF sensor, damaged wiring or connectors, a clogged air filter, or a vacuum leak.

4. How can I diagnose the OBDII code P0103 on my 2007 Ford Fusion?

To diagnose P0103, you can start by visually inspecting the MAF sensor and its wiring, checking the air filter for clogs, and inspecting the air intake system for leaks. You may also use a multimeter to test the MAF sensor's voltage output.

5. Can I still drive my 2007 Ford Fusion with the OBDII code P0103 present?

It is not recommended to drive your vehicle with the OBDII code P0103 (Mass or Volume Air Flow Circuit High Input) as it can lead to poor engine performance and potential damage if left unresolved.

6. How can I repair the OBDII code P0103 on a 2007 Ford Fusion?

Repairing P0103 typically involves replacing a faulty MAF sensor, repairing damaged wiring or connectors, cleaning or replacing the air filter, and fixing any vacuum leaks in the intake system.

7. Will resetting the OBDII code P0103 on my 2007 Ford Fusion make it go away permanently?

Resetting the code may temporarily clear the check engine light, but if the underlying issue causing P0103 is not fixed, the code is likely to reappear after driving the vehicle for some time.

8. Is it easy to replace the MAF sensor to fix the OBDII code P0103 on a 2007 Ford Fusion?

Replacing the MAF sensor on a 2007 Ford Fusion is usually a straightforward process that can be done with basic tools. However, it's recommended to consult the vehicle's repair manual or seek professional help if unsure.

9. Can a clogged air filter cause the OBDII code P0103 on a 2007 Ford Fusion?

Yes, a clogged air filter can disrupt the airflow entering the engine, affecting the MAF sensor readings and potentially triggering the P0103 code on a 2007 Ford Fusion.

10. How often should the MAF sensor be inspected on a 2007 Ford Fusion to prevent the OBDII code P0103?

It's a good practice to inspect the MAF sensor during regular maintenance intervals or whenever you experience symptoms of poor engine performance to help prevent issues like the OBDII code P0103 on a 2007 Ford Fusion.