Engine-CodesFord – P1115 2007 Ford Fusion

P1115 2007 Ford Fusion Code - Intake Air Temperature Sensor 2 Circuit High

Quick Answer

The P1115 code for a 2007 Ford Fusion indicates a problem with the Intake Air Temperature Sensor 2 Circuit being too high. Common causes include Faulty Intake Air Temperature Sensor: The sensor itself may be malfunctioning and providing incorrect readings, Wiring Issues: Damaged or corroded wiring connecting the sensor to the ECM can cause high voltage signals, Poor Connection: A loose or poor connection at the sensor or ECM can lead to erratic readings. 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 2007 Ford Fusion indicates Intake Air Temperature Sensor 2 Circuit High.
Common causes
Common causes include Faulty Intake Air Temperature Sensor: The sensor itself may be malfunctioning and providing incorrect readings, Wiring Issues: Damaged or corroded wiring connecting the sensor to the ECM can cause high voltage signals, Poor Connection: A loose or poor connection at the sensor or ECM can lead to erratic readings.
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.
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P1115 2007 Ford Fusion Description

The P1115 code for a 2007 Ford Fusion indicates a problem with the Intake Air Temperature Sensor 2 Circuit being too high. The Intake Air Temperature (IAT) sensor is responsible for measuring the temperature of the air entering the engine. This information is crucial for the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion. When the sensor detects a high voltage signal, it means that the temperature readings are higher than expected, which can lead to various performance issues.

OBDII Code P1115 2007 Ford Fusion - Intake Air Temperature Sensor 2 Circuit High
P1115 2007 Ford Fusion Code - Intake Air Temperature Sensor 2 Circuit High

Common Causes of P1115 2007 Ford Fusion

  1. Faulty Intake Air Temperature Sensor: The sensor itself may be malfunctioning and providing incorrect readings.
  2. Wiring Issues: Damaged or corroded wiring connecting the sensor to the ECM can cause high voltage signals.
  3. Poor Connection: A loose or poor connection at the sensor or ECM can lead to erratic readings.
  4. ECM Malfunction: A problem with the engine control module can also trigger the P1115 code.

Symptoms of P1115 2007 Ford Fusion

  1. Check Engine Light: The most obvious symptom of the P1115 code is the illumination of the check engine light on the dashboard.
  2. Reduced Fuel Efficiency: A faulty Intake Air Temperature Sensor can cause the engine to run rich or lean, leading to decreased fuel efficiency.
  3. Rough Idle: The engine may idle erratically or rough when the sensor is not providing accurate temperature readings.
  4. Hesitation or Stalling: Incorrect air-fuel mixture can cause the engine to hesitate or stall during acceleration or at idle.
  5. Limp Mode: In severe cases, the vehicle may go into limp mode to protect the engine from further damage.

How to Fix P1115 2007 Ford Fusion

  1. Diagnose the Issue: Use a scan tool to read the code and perform further diagnostics to determine the exact cause of the high voltage signal.
  2. Inspect Wiring and Connections: Check the wiring harness for any damage or corrosion, and ensure all connections are secure.
  3. Test the Intake Air Temperature Sensor: Test the sensor using a multimeter to verify if it is providing accurate readings.
  4. Replace the Sensor: If the sensor is faulty, replace it with a new one following manufacturer's guidelines.
  5. Clear the Code: After making the necessary repairs, clear the code and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1115 2007 Ford Fusion

The cost of repairing the Intake Air Temperature Sensor 2 Circuit high code on a 2007 Ford Fusion can vary depending on the cause of the issue and the labor rates in your area. Typically, the cost of a new Intake Air Temperature Sensor can range from $50 to $100. Labor costs at auto repair shops can range from $80 to $150 per hour. Therefore, the total repair cost could range from $150 to $300 or more, including parts and labor. It's advisable to check with local repair shops for a more accurate estimate based on your specific situation.

Tech Notes for P1115 2007 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 2007 Ford Fusion Code

1. What does OBDII code P1115 on a 2007 Ford Fusion mean?

The code P1115 indicates a problem with the Intake Air Temperature Sensor 2 Circuit, specifically that the sensor is detecting a high voltage.

2. What are the common symptoms of a P1115 fault in a 2007 Ford Fusion?

Common symptoms include poor engine performance, reduced fuel efficiency, check engine light illumination, and potential rough idling or stalling.

3. What are the possible causes of a P1115 fault in a 2007 Ford Fusion?

Potential causes include a faulty intake air temperature sensor, damaged wiring or connectors, a malfunctioning engine control module (ECM), or issues with the air intake system.

4. How can I diagnose a P1115 fault in my 2007 Ford Fusion?

Diagnosing a P1115 fault typically involves using a diagnostic scanner to read the code, testing the intake air temperature sensor and its circuit, inspecting wiring and connectors for damage, and checking the ECM for proper operation.

5. Can I drive my 2007 Ford Fusion with a P1115 fault?

It is not recommended to drive your vehicle with a P1115 fault, as it can lead to further engine damage and potential safety issues. It's best to address the issue promptly.

6. How can I repair a P1115 fault in my 2007 Ford Fusion?

Repairing a P1115 fault may involve replacing the intake air temperature sensor, repairing or replacing damaged wiring or connectors, or reprogramming the ECM if necessary.

7. Are there any DIY tips for fixing a P1115 fault in a 2007 Ford Fusion?

While some basic troubleshooting steps can be done by DIY enthusiasts, it's recommended to seek professional help for diagnosing and repairing a P1115 fault to ensure the proper resolution of the issue.

8. Is it expensive to fix a P1115 fault in a 2007 Ford Fusion?

The cost of repairing a P1115 fault can vary depending on the exact cause of the issue, the labor rates in your area, and whether any parts need to be replaced. It's advisable to get a few quotes from reputable mechanics.

9. How urgent is it to address a P1115 fault in a 2007 Ford Fusion?

It is important to address a P1115 fault promptly to prevent potential engine damage and ensure the optimal performance and fuel efficiency of your vehicle.

10. Can a P1115 fault in a 2007 Ford Fusion cause other problems if left unattended?

If left unattended, a P1115 fault can lead to reduced engine performance, increased fuel consumption, potential damage to engine components, and continued illumination of the check engine light.

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