AutoCodes – Ford – P0108 2020 Ford F150

P0108 2020 Ford F150 Code - Manifold Absolute Pressure/Barometric Pressure Sensor High Input

Quick Answer

The Manifold Absolute Pressure (MAP) Sensor is located on the intake manifold and measures the intake manifold pressure. Common causes include Faulty Manifold Absolute Pressure (MAP) Sensor, Manifold Absolute Pressure Sensor harness is open or shorted, Manifold Absolute Pressure Sensor circuit poor electrical connection. 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: P0108 2020 Ford F150 indicates Manifold Absolute Pressure/Barometric Pressure Sensor High Input.
Common causes: Common causes include Faulty Manifold Absolute Pressure (MAP) Sensor, Manifold Absolute Pressure Sensor harness is open or shorted, Manifold Absolute Pressure Sensor circuit poor electrical connection.
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 284

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
Cost to Diagnose
FAQs
Comments
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Code P0108 2020 Ford F150 Description

The Manifold Absolute Pressure (MAP) Sensor is located on the intake manifold and measures the intake manifold pressure. The Powertrain Control Module (PCM) uses this information to determine the air charge and to provide the input for various engine control functions. Under normal operation, the greatest pressure that can exist in the intake manifold is at ignition ON, and engine OFF, which is equal to the Barometric Pressure (BARO). The lowest manifold pressure occurs when the vehicle is idling or decelerating. The ECM monitors the MAP sensor signal for pressure outside of the normal range. The sensor translates this action into electrical resistance. The MAP sensor may be integrated with an Intake Air Temperature (IAT) sensor. The Diagnostic Trouble Code (DTC) will be set when the MAP Sensor operating voltage is greater than the maximum allowable calibrated parameter of 4.96 volts.

OBDII Code P0108 2020 Ford F150 - Manifold Absolute Pressure/Barometric Pressure Sensor High Input - AutoCodes.com — P0108 2020 Ford F150 Code - Manifold Absolute Pressure/Barometric Pressure Sensor High Input

What does this mean?

What are the Possible Causes of the DTC P0108 2020 Ford F150?

Faulty Manifold Absolute Pressure (MAP) Sensor
Manifold Absolute Pressure Sensor harness is open or shorted
Manifold Absolute Pressure Sensor circuit poor electrical connection

How to Fix the DTC P0108 2020 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0108 2020 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 P0108 2020 Ford F150 Code

1. What does the OBD-II code P0108 indicate on a 2020 Ford F150?

The P0108 code indicates that the Manifold Absolute Pressure (MAP) sensor or the Barometric Pressure Sensor in your 2020 Ford F150 is sending a higher voltage signal than expected, suggesting a high input error.

2. What are common symptoms of code P0108 in a 2020 Ford F150?

Symptoms include engine misfires, rough idling, difficulty starting, a decrease in fuel efficiency, and the engine may stall. The check engine light will also be illuminated.

3. What could cause a P0108 code to appear on my 2020 Ford F150?

Possible causes include a faulty MAP sensor, wiring issues like shorts or opens in the sensor circuit, vacuum leaks, or a faulty electrical connector at the MAP sensor.

4. How can I fix the P0108 code in my 2020 Ford F150?

Repairing a P0108 code can involve replacing the MAP sensor, repairing any damaged wires or connectors in the MAP sensor circuit, and checking for and fixing any vacuum leaks in the intake manifold.

5. Is it safe to drive my 2020 Ford F150 with a P0108 code?

While you can drive with a P0108 code, it is not advisable as it can lead to poor engine performance, increased emissions, and potential engine damage over time. Itâ€™s best to address the issue promptly.

6. How do I diagnose the MAP sensor to confirm itâ€™s the cause of the P0108 code in my 2020 Ford F150?

To diagnose, check the voltage output of the MAP sensor with a multimeter while the engine is running. Compare the readings to the specifications in your vehicleâ€™s service manual. Additionally, inspect the sensor and circuit for any signs of damage or loose connections.

7. What tools are needed to resolve a P0108 error code on a 2020 Ford F150?

Youâ€™ll need a digital multimeter for electrical tests, a vacuum pump for checking for leaks, and basic hand tools to remove and replace the MAP sensor or repair the wiring.

8. Can a P0108 error code impact the fuel economy of my 2020 Ford F150?

Yes, a faulty MAP sensor can lead to incorrect air-fuel mixture adjustments, causing the engine to run rich (more fuel) or lean (less fuel) than normal, which adversely affects fuel economy.

9. What preventative measures can I take to avoid a P0108 code on my 2020 Ford F150?

Regular maintenance checks including inspecting the MAP sensor and its connections, ensuring the intake system is free of leaks, and keeping the engine and its components clean can help prevent issues related to P0108.

10. After repairing a P0108 code, how do I ensure the issue is completely resolved on my 2020 Ford F150?

After repairs, clear the code from the ECU using an OBD-II scanner, then take the vehicle for a test drive to ensure that the check engine light does not reappear and the vehicle is running smoothly. Additionally, recheck the system with a scanner to ensure that no new codes or pending codes are present.