AutoCodes – Ford – P0112 2012 Ford Fusion

P0112 2012 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 2012 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 3,199

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 2012 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 2012 Ford Fusion - Intake Air Temperature Sensor Circuit Low Input - AutoCodes.com — P0112 2012 Ford Fusion Code - Intake Air Temperature Sensor Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0112 2012 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 2012 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 2012 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 2012 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 2012 Ford Fusion Code

1. What are the common symptoms of OBDII code P0112 on a 2012 Ford Fusion?

- Common symptoms include poor engine performance, rough idling, decreased fuel efficiency, and potential stalling.

2. What does the Intake Air Temperature Sensor do in a 2012 Ford Fusion?

- The Intake Air Temperature Sensor measures the temperature of the air entering the engine, helping the engine control module adjust fuel delivery for optimal performance.

3. What are the possible causes of a low input signal from the Intake Air Temperature Sensor in a 2012 Ford Fusion?

- Possible causes include a faulty sensor, damaged wiring or connectors, a disconnected sensor, or issues with the engine control module.

4. How can I diagnose the cause of OBDII code P0112 on my 2012 Ford Fusion?

- You can start by checking the sensor's wiring and connections, testing the sensor itself, and verifying the sensor's readings using a multimeter or scan tool.

5. Can driving with OBDII code P0112 on a 2012 Ford Fusion cause further damage?

- While driving with this code may not immediately harm your vehicle, it can lead to decreased fuel efficiency and potential engine performance issues if left unresolved.

6. Is it safe to continue driving my 2012 Ford Fusion with OBDII code P0112?

- It is generally not recommended to drive with unresolved OBDII codes, as they can indicate underlying issues that may worsen over time. It's best to address the problem promptly.

7. How much does it typically cost to repair OBDII code P0112 on a 2012 Ford Fusion?

- The cost of repair can vary depending on the root cause of the issue. It may involve replacing the sensor, repairing wiring, or addressing issues with the engine control module. Costs can range from $50 to $200 or more.

8. Can I fix OBDII code P0112 on a 2012 Ford Fusion myself?

- If you have the necessary tools and experience, you may be able to diagnose and repair the issue yourself. However, if you're unsure or uncomfortable with the process, it's best to seek professional help.

9. Will resetting the OBDII code P0112 on my 2012 Ford Fusion make it go away permanently?

- Simply clearing the code without addressing the underlying issue will not fix the problem permanently. The code is likely to reappear until the root cause is identified and resolved.

10. How long does it typically take to repair OBDII code P0112 on a 2012 Ford Fusion?

- The repair time can vary depending on the cause of the issue and your level of experience. It may take anywhere from 30 minutes to a few hours to diagnose and repair the problem.