AutoCodes – Ford – P0104 2012 Ford Fusion

P0104 2012 Ford Fusion Code - Mass or Volume Air Flow 'A' Circuit Intermittent

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: P0104 2012 Ford Fusion indicates Mass or Volume Air Flow 'A' Circuit Intermittent.
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 4,351

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 19, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0104 2012 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 an MAF Sensor signal that is outside the calibrated level.

OBDII Code P0104 2012 Ford Fusion - Mass or Volume Air Flow 'A' Circuit Intermittent - AutoCodes.com — P0104 2012 Ford Fusion Code - Mass or Volume Air Flow 'A' Circuit Intermittent

What does this mean?

What are the Possible Causes of the DTC P0104 2012 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 P0104 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

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 P0104 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.

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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 P0104 2012 Ford Fusion Code

1. What are the common symptoms of OBDII code P0104 on a 2012 Ford Fusion?

- Common symptoms include rough idling, stalling, poor acceleration, decreased fuel efficiency, and possibly an illuminated check engine light.

2. What does the OBDII code P0104 'Mass or Volume Air Flow 'A' Circuit Intermittent' mean for a 2012 Ford Fusion?

- This code indicates that there is an intermittent issue with the Mass Air Flow (MAF) sensor circuit on the vehicle.

3. What are the possible causes of OBDII code P0104 on a 2012 Ford Fusion?

- Potential causes include a faulty MAF sensor, damaged wiring or connectors in the MAF circuit, intake air leaks, or a dirty/clogged air filter.

4. How can I diagnose the OBDII code P0104 on my 2012 Ford Fusion?

- You can diagnose this code by checking the condition of the MAF sensor, inspecting the wiring and connectors for any damage, testing for intake air leaks, and ensuring the air filter is clean.

5. Can I drive my 2012 Ford Fusion with OBDII code P0104?

- It is not recommended to drive the vehicle with this code as it can lead to poor engine performance and potential further damage if left unresolved.

6. How can I repair OBDII code P0104 on a 2012 Ford Fusion?

- Repair options include replacing the MAF sensor if faulty, repairing or replacing damaged wiring/connectors, fixing any intake air leaks, and cleaning or replacing the air filter.

7. Will resetting the check engine light resolve OBDII code P0104 on a 2012 Ford Fusion?

- Resetting the check engine light may temporarily turn it off, but it will not fix the underlying issue causing the P0104 code. Proper diagnosis and repair are necessary.

8. How much does it cost to fix OBDII code P0104 on a 2012 Ford Fusion?

- The cost of fixing this code can vary depending on the specific cause, but it may involve expenses for parts such as a new MAF sensor, wiring repairs, or professional labor fees.

9. Is it possible to prevent OBDII code P0104 from occurring on a 2012 Ford Fusion?

- Regular maintenance, such as replacing the air filter as recommended, can help prevent issues with the MAF sensor and potentially reduce the likelihood of triggering the P0104 code.

10. Can OBDII code P0104 on a 2012 Ford Fusion cause any long-term damage if not addressed promptly?

- Ignoring the P0104 code can lead to decreased engine performance, reduced fuel efficiency, and potentially cause damage to other components over time, so it is advisable to address the issue promptly.