AutoCodes – Ford – P0112 2001 Ford F150

P0112 2001 Ford F150 Code - Intake Air Temperature Sensor Circuit Low Input

Quick Answer

The Intake Air Temperature (IAT) sensor is built into Mass Air Flow (MAF) sensor. Common causes include Dirty Air Filter, Faulty Intake Air Temperature (IAT) Sensor, Intake Air Temperature 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: P0112 2001 Ford F150 indicates Intake Air Temperature Sensor Circuit Low Input.
Common causes: Common causes include Dirty Air Filter, Faulty Intake Air Temperature (IAT) Sensor, Intake Air Temperature 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 4,499

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 Jul 13, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0112 2001 Ford F150 Description

The Intake Air Temperature (IAT) sensor is built into Mass Air Flow (MAF) sensor. The sensor detects intake air temperature and transmits a signal to the Powertrain Control Module (PCM). The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases in response to the temperature rise. The Intake Air Temperature signal is used as an input for various systems in the vehicle. It is used by the Powertrain Control Module to assist with the calculation of idle speed, fuel mixture, and spark advance. The Diagnostic Trouble Code (DTC) will set when the PCM detects an excessively low voltage from the sensor.

OBDII Code P0112 2001 Ford F150 - Intake Air Temperature Sensor Circuit Low Input - AutoCodes.com — P0112 2001 Ford F150 Code - Intake Air Temperature Sensor Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0112 2001 Ford F150?

Dirty Air Filter
Faulty Intake Air Temperature (IAT) Sensor
Intake Air Temperature Sensor harness is open or shorted
Intake Air Temperature Sensor circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P0112 2001 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 Mass Air Flow sensor cleaner. Reset code and drive the vehicle. If the code comes back, it may be necessary to replace the Mass Air Flow sensor.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0112 2001 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 P0112 2001 Ford F150 Code

What does OBDII code P0112 mean for a 2001 Ford F150?

OBDII code P0112 indicates that the intake air temperature (IAT) sensor circuit has a low input, which suggests that the sensor is reporting a temperature lower than expected.

What are common symptoms of the P0112 code?

Common symptoms include poor engine performance, reduced fuel efficiency, rough idling, and the check engine light being illuminated.

What could cause the P0112 code to trigger?

Possible causes include a faulty IAT sensor, damaged wiring or connectors in the sensor circuit, a poor electrical connection, or a malfunctioning engine control module (ECM).

How can I diagnose the P0112 code?

To diagnose the P0112 code, you can start by visually inspecting the IAT sensor and its wiring for damage, then use a multimeter to check the sensor's resistance at various temperatures to see if it is functioning correctly.

What is the recommended repair for code P0112?

Repair options may include replacing the faulty IAT sensor, repairing any damaged wiring or connectors, or addressing any issues with the ECM if it is found to be malfunctioning.

Can I drive my 2001 Ford F150 with the P0112 code?

While it may be possible to drive the vehicle, it is not recommended as it can lead to poor performance and reduced fuel efficiency. It's best to address the issue as soon as possible.

How can I reset the P0112 code after repairs?

You can reset the P0112 code by using an OBDII scanner to clear the codes, or by disconnecting the vehicleâ€™s battery for a few minutes, though the latter may reset other settings.

What is the typical cost to repair the issues related to the P0112 code?

Repair costs can vary widely, but replacing the IAT sensor generally ranges from $50 to $200, depending on the parts and labor involved.

Is the IAT sensor easy to replace on a 2001 Ford F150?

Yes, the IAT sensor is typically easy to replace and can often be done with basic tools; however, the exact process may vary depending on the engine configuration.