AutoCodes – Ford – P0112 2007 Ford Fusion

P0112 2007 Ford Fusion 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 2007 Ford Fusion 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 2,498

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 2007 Ford Fusion 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 2007 Ford Fusion - Intake Air Temperature Sensor Circuit Low Input - AutoCodes.com — P0112 2007 Ford Fusion Code - Intake Air Temperature Sensor Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0112 2007 Ford Fusion?

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 2007 Ford Fusion?

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 2007 Ford Fusion 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 2007 Ford Fusion 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 2007 Ford Fusion Code

1. What are the common symptoms of OBDII code P0112 on a 2007 Ford Fusion?

The common symptoms of code P0112 on a 2007 Ford Fusion include poor fuel economy, rough idling, engine stalling, and a decrease in overall engine performance.

2. What does the OBDII code P0112 indicate on a 2007 Ford Fusion?

Code P0112 on a 2007 Ford Fusion indicates a low input signal from the Intake Air Temperature (IAT) sensor circuit.

3. What are the possible causes of OBDII code P0112 on a 2007 Ford Fusion?

Possible causes of code P0112 on a 2007 Ford Fusion include a faulty IAT sensor, damaged wiring or connectors in the sensor circuit, or issues with the engine control module (ECM).

4. How can I diagnose the Intake Air Temperature sensor circuit on a 2007 Ford Fusion?

To diagnose the IAT sensor circuit on a 2007 Ford Fusion, you can use a multimeter to test the sensor's resistance, check for any damaged wiring or connectors, and inspect the sensor for any physical damage.

5. How can I repair OBDII code P0112 on a 2007 Ford Fusion?

To repair code P0112 on a 2007 Ford Fusion, you may need to replace the Intake Air Temperature sensor, repair any damaged wiring or connectors in the circuit, or reprogram the engine control module (ECM).

6. Can a dirty air filter trigger OBDII code P0112 on a 2007 Ford Fusion?

A dirty air filter is unlikely to trigger code P0112 on a 2007 Ford Fusion. This code is specifically related to the Intake Air Temperature (IAT) sensor circuit and its input signal.

7. Will driving with OBDII code P0112 on a 2007 Ford Fusion cause further damage?

Continuing to drive with code P0112 on a 2007 Ford Fusion may lead to poor engine performance and fuel economy. It is recommended to address the issue promptly to prevent any additional damage.

8. How important is the Intake Air Temperature sensor for the operation of a 2007 Ford Fusion?

The Intake Air Temperature (IAT) sensor is crucial for providing the engine control module (ECM) with accurate temperature readings to adjust air-fuel mixture ratios. A malfunctioning IAT sensor can impact engine performance.

9. Can I reset OBDII code P0112 on a 2007 Ford Fusion by disconnecting the battery?

Disconnecting the battery may clear the code temporarily, but it is not a permanent solution. It is recommended to diagnose and repair the underlying issue causing code P0112 on a 2007 Ford Fusion.

10. Is it safe to ignore OBDII code P0112 on a 2007 Ford Fusion if the vehicle is still running?

While the vehicle may still operate with code P0112 present, ignoring the issue can lead to decreased performance and potential long-term damage. It is best to address the problem as soon as possible to maintain optimal vehicle performance.