AutoCodes – Ford – P1115 2011 Ford Fusion

P1115 2011 Ford Fusion Code - Intake Air Temperature Sensor 2 Circuit High

Quick Answer

The IAT sensor is a thermistor device in which resistance changes with temperature. Common causes include Faulty Intake Air Temperature Sensor 2, Intake Air Temperature Sensor 2 harness is open or shorted, Intake Air Temperature Sensor 2 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: P1115 2011 Ford Fusion indicates Intake Air Temperature Sensor 2 Circuit High.
Common causes: Common causes include Faulty Intake Air Temperature Sensor 2, Intake Air Temperature Sensor 2 harness is open or shorted, Intake Air Temperature Sensor 2 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 2,185

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 Apr 21, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1115 2011 Ford Fusion Description

The IAT sensor is a thermistor device in which resistance changes with temperature. The electrical 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 terminals 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. 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 air flow.
The IAT sensor provides a quicker temperature change response time than the ECT or CHT sensor.
Currently there are 2 types of IAT sensors used, a stand alone, non-integrated type and an integrated type. Both types function the same, however the integrated type is incorporated into the mass air flow (MAF) sensor instead of being a stand-alone sensor.

OBDII Code P1115 2011 Ford Fusion - Intake Air Temperature Sensor 2 Circuit High - AutoCodes.com — P1115 2011 Ford Fusion Code - Intake Air Temperature Sensor 2 Circuit High

What does this mean?

What are the Possible Causes of the DTC P1115 2011 Ford Fusion?

Faulty Intake Air Temperature Sensor 2
Intake Air Temperature Sensor 2 harness is open or shorted
Intake Air Temperature Sensor 2 circuit poor electrical connection
Damaged Powertrain Control Module (PCM)

How to Fix the DTC P1115 2011 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 sensor, try replacing the air filter and cleaning the air flow sensor with mass air flow sensor cleaner. Reset code and drive vehicle. If the code comes back, it may be necessary to replaced the mass air flow sensor. Monitor the IAT on a scan tool. Look for sudden changes in the reading when the harness is wiggled or the sensor is tapped.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1115 2011 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 P1115 2011 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 P1115 2011 Ford Fusion Code

1. What are the common symptoms of OBDII code P1115 in a 2011 Ford Fusion?

The common symptoms of code P1115 in a 2011 Ford Fusion include rough idling, decreased fuel efficiency, and potential stalling of the engine.

2. What does the OBDII code P1115 "Intake Air Temperature Sensor 2 Circuit High" mean in a 2011 Ford Fusion?

The P1115 code indicates that the Engine Control Module (ECM) has detected a high voltage signal from the Intake Air Temperature Sensor 2 in the intake system of the 2011 Ford Fusion.

3. What are the possible causes of OBDII code P1115 on a 2011 Ford Fusion?

Possible causes of code P1115 in a 2011 Ford Fusion include a faulty intake air temperature sensor, damaged wiring or connectors in the sensor circuit, or issues with the Engine Control Module (ECM).

4. How can I diagnose the cause of OBDII code P1115 in my 2011 Ford Fusion?

To diagnose the cause of code P1115, you can start by inspecting the intake air temperature sensor and its wiring for any visible damage. You may also use a multimeter to test the sensor's resistance and voltage output.

5. Can I continue driving my 2011 Ford Fusion with OBDII code P1115?

It is not recommended to drive your 2011 Ford Fusion with an unresolved P1115 code, as it may lead to poor engine performance and potential damage over time. It is best to address the issue promptly.

6. How do I repair OBDII code P1115 on my 2011 Ford Fusion?

Repairing code P1115 typically involves replacing the faulty intake air temperature sensor 2 and repairing any damaged wiring or connectors in the sensor circuit. Clearing the code with a diagnostic tool is also necessary.

7. Is it possible to reset OBDII code P1115 in a 2011 Ford Fusion without fixing the underlying issue?

Resetting the code without addressing the underlying issue will only temporarily clear the check engine light. The code is likely to return if the root cause is not repaired.

8. Can a DIY enthusiast fix OBDII code P1115 on a 2011 Ford Fusion?

Depending on your skill level and access to tools, a DIY enthusiast may be able to replace the intake air temperature sensor and repair the wiring associated with code P1115 in a 2011 Ford Fusion.

9. How much does it cost to repair OBDII code P1115 in a 2011 Ford Fusion at a professional auto repair shop?

The cost of repairing code P1115 at an auto repair shop can vary depending on the labor rates and parts required. It is recommended to obtain multiple quotes for an accurate estimate.

10. Will fixing OBDII code P1115 improve the overall performance of my 2011 Ford Fusion?

Addressing OBDII code P1115 and repairing the underlying issue should help improve the overall performance and fuel efficiency of your 2011 Ford Fusion by ensuring the intake air temperature sensor functions correctly.