AutoCodes – Ford – P0109 2017 Ford F150

P0109 2017 Ford F150 Code - Manifold Absolute Pressure/Barometric Pressure Sensor Intermittent

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: P0109 2017 Ford F150 indicates Manifold Absolute Pressure/Barometric Pressure Sensor Intermittent.
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 263

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
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0109 2017 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 signal is intermittent.

OBDII Code P0109 2017 Ford F150 - Manifold Absolute Pressure/Barometric Pressure Sensor Intermittent - AutoCodes.com — P0109 2017 Ford F150 Code - Manifold Absolute Pressure/Barometric Pressure Sensor Intermittent

What does this mean?

What are the Possible Causes of the DTC P0109 2017 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 P0109 2017 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 P0109 2017 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 P0109 2017 Ford F150 Code

1. What does the OBDII code P0109 indicate on a 2017 Ford F150?

The P0109 code on a 2017 Ford F150 indicates that there is an intermittent signal from the Manifold Absolute Pressure (MAP) or Barometric Pressure (Baro) Sensor, suggesting fluctuations that are outside the normal range or interruptions in the sensor's signal to the ECM (Engine Control Module).

2. What are common symptoms of code P0109 in a 2017 Ford F150?

Common symptoms include engine misfires, rough idling, difficulty starting, poor fuel economy, and the engine stalling. The check engine light will also illuminate on the dashboard.

3. What can cause the P0109 code to appear on a 2017 Ford F150?

Possible causes for the P0109 code include a faulty MAP sensor, loose or corroded connections at the MAP sensor, a vacuum leak, or a problem with the electrical circuit such as shorted or open wiring.

4. How do you diagnose the P0109 code on a 2017 Ford F150?

Diagnosis should start with inspecting the MAP sensor and its connections for any signs of damage or corrosion. Check the wiring and connectors for breaks or shorts. A scan tool can be used to monitor the MAP sensor readings while wiggling the wires to identify any intermittent faults. Additionally, checking for vacuum leaks and testing the sensor's voltage output may be necessary.

5. What are the steps to fix the P0109 code on a 2017 Ford F150?

To fix the P0109 code, start by cleaning or replacing the MAP sensor if it is faulty. Repair or replace any damaged wires or connectors and ensure all connections are secure. If the issue persists, further investigation into the ECM and the sensorâ€™s circuit may be required.

6. Is it safe to drive a 2017 Ford F150 with the P0109 code?

While you can drive with the P0109 code, it is advisable to address the issue as soon as possible. Driving with this code can lead to reduced performance, increased fuel consumption, and potential engine damage over time.

7. Will the P0109 code clear itself once the issue is resolved on a 2017 Ford F150?

Yes, the P0109 code will usually clear itself after the issue is resolved and the vehicle is driven for a certain period. However, to immediately clear the code and verify the repair, it is recommended to use an OBDII scanner.

8. Could a software issue trigger the P0109 code on a 2017 Ford F150?

Yes, in some cases, a software issue in the ECM could incorrectly trigger the P0109 code. Updating the ECM software or reprogramming it might be necessary if hardware issues have been ruled out.