AutoCodes – Ford – P0102 2019 Ford F150

P0102 2019 Ford F150 Code - Mass Or Volume Air Flow Sensor 'A' Circuit Low 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: P0102 2019 Ford F150 indicates Mass Or Volume Air Flow Sensor 'A' Circuit Low 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 235

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 P0102 2019 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 during Key ON, Engine Running (KOER), the Mass Airflow Sensor output changes below a minimum calibrated limit for greater than a set period of time.

OBDII Code P0102 2019 Ford F150 - Mass Or Volume Air Flow Sensor 'A' Circuit Low Input - AutoCodes.com — P0102 2019 Ford F150 Code - Mass Or Volume Air Flow Sensor 'A' Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0102 2019 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 P0102 2019 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 P0102 2019 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 P0102 2019 Ford F150 Code

1. What does the OBDII code P0102 mean on a 2019 Ford F150?

P0102 indicates that the Mass Air Flow (MAF) sensor is reporting a low voltage input to the engine control module (ECM), suggesting an issue with airflow measurement.

2. What are the common symptoms of code P0102 in a 2019 Ford F150?

Symptoms may include poor fuel economy, rough idling, difficulty starting, reduced engine power, and the check engine light illuminating.

3. What causes a P0102 code on a 2019 Ford F150?

Common causes include a dirty or faulty MAF sensor, damaged wiring or connectors, intake air leaks, or a clogged air filter.

4. Can a dirty air filter trigger the P0102 code on a 2019 Ford F150?

Yes, a clogged or dirty air filter can disrupt airflow and potentially cause the MAF sensor to send a low voltage signal, triggering the P0102 code.

5. How can I fix the P0102 code on my 2019 Ford F150?

Start by inspecting and cleaning the MAF sensor, replacing the air filter if necessary, and checking for damaged wiring or air leaks in the intake system.

6. Can I clean the MAF sensor to resolve the P0102 code?

Yes, you can use a specialized MAF sensor cleaner to gently clean the sensor, but avoid using generic cleaners as they may damage it.

7. Is it safe to drive my 2019 Ford F150 with a P0102 code?

While the vehicle is still drivable, the P0102 code can lead to poor performance and increased fuel consumption. Itâ€™s best to address the issue as soon as possible.

8. How do I check for intake air leaks that might cause a P0102 code?

Inspect the intake hoses, clamps, and connections for cracks, loose fittings, or damage that could allow unmetered air to enter the engine.

9. Does a faulty MAF sensor always need to be replaced for a P0102 code?

Not necessarily. Sometimes cleaning the sensor resolves the issue, but if the sensor is damaged or malfunctioning, replacement may be required.

10. Can a faulty PCM cause the P0102 code on a 2019 Ford F150?

While rare, a malfunctioning Powertrain Control Module (PCM) can cause the P0102 code by misinterpreting sensor data, but this is typically a last resort after ruling out other causes.