AutoCodes – Ford – P0103 2018 Ford F150

P0103 2018 Ford F150 Code - Mass Or Volume Air Flow Sensor 'A' Circuit High Input

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: P0103 2018 Ford F150 indicates Mass Or Volume Air Flow Sensor 'A' Circuit High Input.
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 204

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 Sep 21, 2023

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0103 2018 Ford F150 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 the Mass Airflow Sensor output changes above a maximum calibrated limit while the engine is running.

OBDII Code P0103 2018 Ford F150 - Mass Or Volume Air Flow Sensor 'A' Circuit High Input - AutoCodes.com — P0103 2018 Ford F150 Code - Mass Or Volume Air Flow Sensor 'A' Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0103 2018 Ford F150?

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 P0103 2018 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 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 P0103 2018 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.

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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 2018 Ford F150 Code

1. What does the OBDII code P0103 mean on a 2018 Ford F150?

The P0103 code indicates that the Mass Air Flow (MAF) sensor circuit is detecting a higher than normal voltage, suggesting an issue with the sensor or its circuitry.

2. What symptoms might I notice if my 2018 Ford F150 has the P0103 code?

Symptoms can include a check engine light, rough idling, stalling, difficulty starting, and a decrease in fuel efficiency.

3. What could cause the P0103 code to appear on a 2018 Ford F150?

Common causes include a faulty MAF sensor, dirty or clogged MAF sensor, issues with the MAF sensor electrical connections, or air leaks in the intake system.

4. How can I fix the P0103 code in a 2018 Ford F150?

Fixing this code might involve cleaning or replacing the MAF sensor, repairing or replacing damaged wiring or connectors, or fixing air leaks in the intake manifold or hoses.

5. Is it safe to drive my 2018 Ford F150 with the P0103 code?

While you can drive with this code, it's advisable to address the issue promptly as it can lead to poor performance and potentially more serious engine problems.

6. How do I diagnose the P0103 code on a 2018 Ford F150?

Diagnosis should start with checking the MAF sensor for debris or damage, inspecting the wiring and connectors for signs of wear or disconnection, and checking for air leaks in the intake system.

7. Can a dirty air filter cause the P0103 code on a 2018 Ford F150?

Yes, a dirty air filter can restrict airflow to the MAF sensor, causing incorrect readings and potentially triggering this code.

8. What tools are needed to diagnose and repair the P0103 code on a 2018 Ford F150?

Tools needed may include a digital multimeter, a scan tool, and basic hand tools for removing and replacing components.

9. How much does it typically cost to resolve the P0103 code in a 2018 Ford F150?

Costs can vary widely depending on whether you need to replace the MAF sensor or simply clean it and repair connections. Parts and labor can range from $50 to $400.

10. After repairing the P0103 code on a 2018 Ford F150, what should I do next?

After repair, clear the code with an OBDII scanner and take the vehicle for a test drive to ensure that the issue is resolved and the code does not reappear.