AutoCodes – Ford – P0104 Ford

P0104 Ford Code - Mass Or Volume Air Flow Sensor 'A' Circuit Intermittent

Quick Answer

The Mass Airflow (MAF) Sensor uses a hot wire sensing element to measure the amount of air entering the engine. Common causes include Dirty Air Filter, Faulty Mass Airflow (MAF) 'A' Sensor, Mass Airflow 'A' Sensor harness is open or shorted. 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 Ford indicates Mass Or Volume Air Flow Sensor 'A' Circuit Intermittent.
Common causes: Common causes include Dirty Air Filter, Faulty Mass Airflow (MAF) 'A' Sensor, Mass Airflow 'A' Sensor harness is open or shorted.
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 40,798

How popular is this code, among other codes? Medium

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 Sep 21, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
Comments
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Code P0104 Ford Description

The Mass Airflow (MAF) Sensor uses a hot wire sensing element to measure the amount of air entering the engine. The air passing over the hot wire causes it to cool. This hot wire is maintained at 200°C (392°F) above the ambient temperature as measured by a constant cold wire. The current required to maintain the temperature of the hot wire is proportional to the mass airflow. The MAF Sensor then outputs a signal to the Powertrain Control Module (PCM) proportional to the intake air mass. The PCM calculates the required fuel injector pulse width in order to provide the desired air to fuel ratio. The MAF sensor is located near the air cleaner assembly. Most MAF sensors have an integrated Intake Air Temperature (IAT) sensor. This Diagnostic Trouble Code (DTC) will be set when a concern exists in the MAF circuit, or the air tube containing the MAF Sensor, causing an incorrect sensor output reading.

OBDII Code P0104 Ford - Mass Or Volume Air Flow Sensor 'A' Circuit Intermittent - AutoCodes.com — P0104 Ford Code - Mass Or Volume Air Flow Sensor 'A' Circuit Intermittent

What does this mean?

What are the Possible Causes of the DTC P0104 Ford?

Dirty Air Filter
Faulty Mass Airflow (MAF) 'A' Sensor
Mass Airflow 'A' Sensor harness is open or shorted
Mass Airflow 'A' Sensor circuit poor electrical connection

How to Fix the DTC P0104 Ford?

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-compressed air or a Mass Air Flow Sensor Cleaner. Reset the code and drive the 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 Ford 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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Information for Specific Ford Models

P0104 2015 Ford F150 — Mass Or Volume Air Flow Sensor 'A' Circuit Intermittent
P0104 2016 Ford F150 — Mass Or Volume Air Flow Sensor 'A' Circuit Intermittent
P0104 2017 Ford F150 — Mass Or Volume Air Flow Sensor 'A' Circuit Intermittent
P0104 2018 Ford F150 — Mass Or Volume Air Flow Sensor 'A' Circuit Intermittent
P0104 2019 Ford F150 — Mass Or Volume Air Flow Sensor 'A' Circuit Intermittent
P0104 2020 Ford F150 — Mass Or Volume Air Flow Sensor 'A' Circuit Intermittent
P0104 2006 Ford Fusion — Mass or Volume Air Flow 'A' Circuit Intermittent
P0104 2007 Ford Fusion — Mass or Volume Air Flow 'A' Circuit Intermittent
P0104 2008 Ford Fusion — Mass or Volume Air Flow 'A' Circuit Intermittent
P0104 2009 Ford Fusion — Mass or Volume Air Flow 'A' Circuit Intermittent
P0104 2010 Ford Fusion — Mass or Volume Air Flow 'A' Circuit Intermittent
P0104 2011 Ford Fusion — Mass or Volume Air Flow 'A' Circuit Intermittent
P0104 2012 Ford Fusion — Mass or Volume Air Flow 'A' Circuit Intermittent

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.