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P1115 2012 Ford Fusion Code - Intake Air Temperature Sensor 2 Circuit High

Quick Answer

The P1115 diagnostic trouble code (DTC) for a 2012 Ford Fusion indicates a problem with the Intake Air Temperature Sensor 2 Circuit being too high. Common causes include Faulty Intake Air Temperature Sensor 2, Wiring or connector issues, ECM malfunction. 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 2012 Ford Fusion indicates Intake Air Temperature Sensor 2 Circuit High.
Common causes
Common causes include Faulty Intake Air Temperature Sensor 2, Wiring or connector issues, ECM malfunction.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code P1115 2012 Ford Fusion Description

The P1115 diagnostic trouble code (DTC) for a 2012 Ford Fusion indicates a problem with the Intake Air Temperature Sensor 2 Circuit being too high. The Intake Air Temperature Sensor (IAT) is a crucial component of the engine control system, responsible for measuring the temperature of the air entering the engine. This information is used by the engine control module (ECM) to adjust fuel delivery and ignition timing for optimal performance and efficiency.

OBDII Code P1115 2012 Ford Fusion - Intake Air Temperature Sensor 2 Circuit High
P1115 2012 Ford Fusion Code - Intake Air Temperature Sensor 2 Circuit High

Common Causes of P1115 2012 Ford Fusion

  1. Faulty Intake Air Temperature Sensor 2
  2. Wiring or connector issues
  3. ECM malfunction
  4. Vacuum leak affecting sensor readings
  5. Environmental factors such as extreme heat affecting sensor performance

Symptoms of P1115 2012 Ford Fusion

  1. Decreased fuel efficiency
  2. Reduced engine power
  3. Rough idling or stalling
  4. Engine misfires
  5. Illumination of the check engine light

How to Fix P1115 2012 Ford Fusion

  1. Begin by diagnosing the issue using a scan tool to confirm the P1115 code and pinpoint the exact cause.
  2. Inspect the wiring and connectors associated with the Intake Air Temperature Sensor 2 for any damage or corrosion.
  3. Test the sensor's resistance and voltage output to determine if it is functioning correctly.
  4. Replace the Intake Air Temperature Sensor 2 if it is found to be faulty, ensuring proper installation and connection.
  5. Clear the DTC and perform a test drive to verify that the issue has been resolved.

Cost to Fix P1115 2012 Ford Fusion

The typical repair costs for addressing a P1115 code on a 2012 Ford Fusion can range from $100 to $300, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate. Factors such as location, vehicle make and model, and engine type can also impact repair costs.

What does this mean?

Tech Notes for P1115 2012 Ford Fusion

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.

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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 2012 Ford Fusion Code

1. What are the common symptoms of OBDII code P1115 on a 2012 Ford Fusion?

Symptoms may include poor engine performance, reduced fuel efficiency, and possibly an illuminated check engine light.

2. What does the OBDII code P1115 on a 2012 Ford Fusion indicate?

This code specifically points to an issue with the Intake Air Temperature Sensor 2 Circuit registering a high voltage output.

3. What are the potential causes of the Intake Air Temperature Sensor 2 Circuit High error on a 2012 Ford Fusion?

Causes may include a faulty intake air temperature sensor, wiring issues, a damaged sensor connector, or an internal ECM problem.

4. How can I diagnose the Intake Air Temperature Sensor 2 Circuit High issue on my 2012 Ford Fusion?

Diagnosis involves checking the sensor's wiring for any damage, testing the sensor's resistance, and inspecting the connector for corrosion or loose pins.

5. Can a dirty air filter trigger the P1115 code on a 2012 Ford Fusion?

While a dirty air filter can affect engine performance, it is unlikely to directly cause the Intake Air Temperature Sensor 2 Circuit High error.

6. What are the repair options for resolving the OBDII code P1115 on a 2012 Ford Fusion?

Repair options include replacing the intake air temperature sensor, repairing any damaged wiring, cleaning the sensor connector, or seeking professional diagnostic assistance.

7. Is it safe to continue driving a 2012 Ford Fusion with the P1115 code illuminated?

It is generally not recommended to drive the vehicle with a persistent check engine light, as it indicates an underlying issue that may worsen over time if left unaddressed.

8. Can resetting the fault codes temporarily fix the P1115 error on a 2012 Ford Fusion?

Resetting the fault codes may temporarily clear the check engine light, but if the underlying issue causing the P1115 code is not fixed, the light is likely to reappear.

9. How much does it typically cost to repair the Intake Air Temperature Sensor 2 Circuit High problem on a 2012 Ford Fusion?

Costs can vary depending on the specific cause of the issue, but replacing the intake air temperature sensor or repairing wiring typically ranges from $100 to $300, including parts and labor.

10. Will the P1115 code on a 2012 Ford Fusion affect the vehicle's emissions or overall performance?

Yes, unresolved issues related to the Intake Air Temperature Sensor 2 Circuit High can impact emissions output and may lead to reduced engine performance and fuel efficiency.

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