AutoCodes – Ford – P0111 2012 Ford Fusion

P0111 2012 Ford Fusion Code - Intake Air Temperature Sensor 1 Circuit Range/Performance Problem

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: P0111 2012 Ford Fusion indicates Intake Air Temperature Sensor 1 Circuit Range/Performance Problem.
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 4,675

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 P0111 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 or high voltage from the sensor.

OBDII Code P0111 2012 Ford Fusion - Intake Air Temperature Sensor 1 Circuit Range/Performance Problem - AutoCodes.com — P0111 2012 Ford Fusion Code - Intake Air Temperature Sensor 1 Circuit Range/Performance Problem

What does this mean?

What are the Possible Causes of the DTC P0111 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 P0111 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 P0111 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 P0111 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 P0111 2012 Ford Fusion Code

1. What are the common symptoms of the P0111 OBDII code in a 2012 Ford Fusion?

- Common symptoms include poor fuel economy, rough idling, engine stalling, and a noticeable decrease in engine performance.

2. What does the P0111 OBDII code indicate in a 2012 Ford Fusion?

- The P0111 code indicates an issue with the Intake Air Temperature Sensor 1 circuit, specifically a range/performance problem.

3. What are the possible causes of the P0111 OBDII code in a 2012 Ford Fusion?

- Possible causes include a faulty intake air temperature sensor, damaged wiring or connectors, a dirty air filter, or issues with the engine's intake air system.

4. How can I diagnose the P0111 OBDII code on my 2012 Ford Fusion?

- To diagnose the issue, you can use a scan tool to read the code and check the intake air temperature sensor's readings. Inspect the sensor, wiring, and connectors for any visible damage.

5. Can I drive my 2012 Ford Fusion with the P0111 OBDII code?

- It is not recommended to drive your vehicle with the P0111 code as it can lead to further engine problems and potential damage. It's best to address the issue promptly.

6. What are some repair tips for fixing the P0111 OBDII code in a 2012 Ford Fusion?

- Start by inspecting and cleaning the intake air temperature sensor. Check the wiring and connectors for any damage and repair or replace as needed. Ensure the air filter is clean and properly installed.

7. How much does it cost to repair the P0111 OBDII code in a 2012 Ford Fusion?

- The cost of repair can vary depending on the exact cause of the issue. Replacing the intake air temperature sensor can cost between $50 and $150, while addressing wiring or connector problems may incur additional labor costs.

8. Can a DIY enthusiast fix the P0111 OBDII code in a 2012 Ford Fusion?

- Depending on your skill level and access to tools, a DIY enthusiast can potentially fix the P0111 code by following repair guides or online tutorials. However, if you're unsure, it's best to consult a professional mechanic.

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

- Resetting the code may temporarily clear the Check Engine Light, but if the underlying issue causing the P0111 code is not addressed, it is likely to reappear. It's important to diagnose and fix the root cause of the problem.

10. How long does it take to repair the P0111 OBDII code in a 2012 Ford Fusion?

- The repair time can vary based on the cause of the issue and your mechanic's expertise. In general, fixing the P0111 code can take anywhere from 1 to 3 hours, depending on the complexity of the repair.