AutoCodes – Ford – P0112 2018 Ford F150

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

Quick Answer

The Intake Air Temperature (IAT) Sensor is a thermistor device in which resistance changes with temperature. Common causes include Faulty Intake Air Temperature (IAT) Sensor, Intake Air Temperature Sensor harness is open or shorted, Intake Air Temperature 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: P0112 2018 Ford F150 indicates Intake Air Temperature Sensor 1 Circuit Low Input.
Common causes: Common causes include Faulty Intake Air Temperature (IAT) Sensor, Intake Air Temperature Sensor harness is open or shorted, Intake Air Temperature 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 469

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 22, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0112 2018 Ford F150 Description

The Intake Air Temperature (IAT) Sensor is a thermistor device in which resistance changes with temperature. The resistance of a thermistor decreases as the temperature increases, and the resistance increases as the temperature decreases. The varying resistance affects the voltage drop across the sensor pins and provides electrical signals to the Powertrain Control Module (PCM) corresponding to temperature.
Thermistor-type sensors are considered passive sensors. A passive sensor is connected to a voltage divider network so that varying the resistance of the passive sensor causes a variation in total current flow. The voltage that is dropped across a fixed resistor in a series with the sensor resistor determines the voltage signal at the PCM. This voltage signal is equal to the reference voltage minus the voltage drop across the fixed resistor.
The IAT sensor provides air temperature information to the PCM. The PCM uses the air temperature information as a correction factor in the calculation of fuel, spark, and airflow.
The IAT sensor provides a quicker temperature change response time than the Engine Coolant Temperature (ECT) or Cylinder Head Temperature (CHT) sensor.
Currently, there are 2 types of IAT sensors used, a stand-alone and an integrated type. Both types function the same, however, the integrated type is incorporated into the Mass Air Flow (MAF) Sensor, the Manifold Absolute Pressure and Temperature (MAPT) Sensor, or the Turbocharger Intake Pressure and Temperature (TCIPT) Sensor instead of being a stand-alone sensor.
This Diagnostic Trouble Code (DTC) will be set if the IAT Sensor signal is less than the self-test minimum.

OBDII Code P0112 2018 Ford F150 - Intake Air Temperature Sensor 1 Circuit Low Input - AutoCodes.com — P0112 2018 Ford F150 Code - Intake Air Temperature Sensor 1 Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0112 2018 Ford F150?

Faulty Intake Air Temperature (IAT) Sensor
Intake Air Temperature Sensor harness is open or shorted
Intake Air Temperature Sensor circuit poor electrical connection

How to Fix the DTC P0112 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0112 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.

Need more information about the P0112 2018 Ford F150 code?

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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.