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P0112 2018 Ford F150 Code - Intake Air Temperature Sensor 1 Circuit Low Input

Quick Answer

The P0112 diagnostic trouble code (DTC) for a 2018 Ford F150 refers to the Intake Air Temperature Sensor 1 Circuit Low Input. Common causes include Faulty intake air temperature sensor, Wiring issues such as a short circuit or open circuit in the IAT sensor circuit, Loose or corroded electrical connections. 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
P0112 2018 Ford F150 indicates Intake Air Temperature Sensor 1 Circuit Low Input.
Common causes
Common causes include Faulty intake air temperature sensor, Wiring issues such as a short circuit or open circuit in the IAT sensor circuit, Loose or corroded electrical connections.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code P0112 2018 Ford F150 Description

The P0112 diagnostic trouble code (DTC) for a 2018 Ford F150 refers to the Intake Air Temperature Sensor 1 Circuit Low Input. This code indicates that the engine control module (ECM) has detected a lower than expected voltage signal from the intake air temperature (IAT) sensor. The IAT sensor is responsible for measuring the temperature of the air entering the engine, which is crucial for determining the air-fuel mixture and ignition timing. When the ECM receives a low input signal from the IAT sensor, it can lead to incorrect fuel delivery and ignition timing, resulting in poor engine performance, reduced fuel efficiency, and increased emissions.

OBDII Code P0112 2018 Ford F150 - Intake Air Temperature Sensor 1 Circuit Low Input
P0112 2018 Ford F150 Code - Intake Air Temperature Sensor 1 Circuit Low Input

Common Causes of P0112 2018 Ford F150

  1. Faulty intake air temperature sensor.
  2. Wiring issues such as a short circuit or open circuit in the IAT sensor circuit.
  3. Loose or corroded electrical connections.
  4. ECM software or hardware issues.
  5. Intake air leaks near the sensor.

Symptoms of P0112 2018 Ford F150

  1. Check Engine Light illuminated on the dashboard.
  2. Reduced engine power or acceleration.
  3. Rough idling or stalling.
  4. Poor fuel efficiency.
  5. Increased emissions.

How to Fix P0112 2018 Ford F150

  1. Begin by visually inspecting the wiring and connectors associated with the intake air temperature sensor. Look for any signs of damage, corrosion, or loose connections. Repair or replace any damaged components.
  2. Test the intake air temperature sensor using a multimeter to ensure it is functioning correctly. If the sensor is faulty, replace it with a new one.
  3. Clear the DTC using an OBD-II scanner and monitor the system to see if the code returns. If the code persists, further diagnosis may be necessary to identify any underlying issues.
  4. If the issue is not resolved after replacing the sensor and checking the wiring, consult a professional mechanic or dealership for further diagnosis and repair.

Cost to Fix P0112 2018 Ford F150

The cost of repairing a P0112 code on a 2018 Ford F150 can vary depending on the specific cause of the issue. In general, the intake air temperature sensor itself typically costs between $20 and $50, while labor costs can range from $80 to $150 per hour. The total repair cost may therefore range from $100 to $300 or more, depending on the extent of the repairs needed. It is recommended to consult with a local auto repair shop for a more accurate estimate based on your location and vehicle specifics.

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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 P0112 2018 Ford F150 Code

1. What are the common symptoms of OBDII code P0112 on a 2018 Ford F150?

The common symptoms of OBDII code P0112 on a 2018 Ford F150 include poor engine performance, rough idling, decreased fuel efficiency, and potential stalling.

2. What does the Intake Air Temperature Sensor 1 Circuit Low Input code (P0112) indicate on a 2018 Ford F150?

The P0112 code indicates that the intake air temperature sensor is reporting a low input signal to the vehicle's computer, potentially causing issues with fuel delivery and engine performance.

3. What are the possible causes of OBDII code P0112 on a 2018 Ford F150?

Possible causes of code P0112 on a 2018 Ford F150 include a faulty intake air temperature sensor, damaged wiring or connectors in the sensor circuit, or a problem with the vehicle's engine control module (ECM).

4. How can I diagnose the Intake Air Temperature Sensor 1 Circuit Low Input issue on my 2018 Ford F150?

To diagnose the P0112 code on your 2018 Ford F150, you can start by visually inspecting the sensor and its wiring for any obvious damage. You may also use a multimeter to test the sensor's resistance and voltage output.

5. Can I drive my 2018 Ford F150 with OBDII code P0112?

It is not recommended to drive your 2018 Ford F150 with an active P0112 code, as it can lead to poor engine performance and potential further damage. It's best to address the issue promptly.

6. How can I repair OBDII code P0112 on my 2018 Ford F150?

Repairing the P0112 code on a 2018 Ford F150 typically involves replacing the intake air temperature sensor if it is faulty. You may also need to repair or replace any damaged wiring or connectors in the sensor circuit.

7. Will resetting the OBDII code P0112 on my 2018 Ford F150 solve the issue?

Simply resetting the code without addressing the underlying problem will not solve the issue. It's important to diagnose and repair the root cause of the P0112 code to prevent it from reoccurring.

8. Can a dirty air filter trigger OBDII code P0112 on a 2018 Ford F150?

While a dirty air filter can impact engine performance, it is unlikely to trigger the P0112 code directly. However, maintaining a clean air filter is essential for overall engine health.

9. How much does it cost to fix OBDII code P0112 on a 2018 Ford F150?

The cost of fixing the P0112 code on a 2018 Ford F150 can vary depending on the exact cause of the issue. It may range from a relatively inexpensive sensor replacement to more costly repairs if wiring or ECM issues are involved.

10. Can I clear the OBDII code P0112 on my 2018 Ford F150 using a diagnostic tool?

Yes, you can clear the P0112 code using an OBDII diagnostic tool. However, it is important to address the underlying problem first to prevent the code from reappearing.

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