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Engine-Codes – Ford – P1115 1997 Ford F150

P1115 1997 Ford F150 Code - Intake Air Temperature Sensor 2 Circuit High

Quick Answer

The P1115 diagnostic trouble code (DTC) for a 1997 Ford F150 indicates a problem with the Intake Air Temperature Sensor 2 Circuit being too high. Common causes include Faulty IAT Sensor: The most common cause of the P1115 code is a malfunctioning Intake Air Temperature sensor, Wiring Issues: Damaged or corroded wiring connecting the IAT sensor to the ECM can lead to high voltage signals, ECM Malfunction: A problem with the Engine Control Module can also trigger the IAT sensor 2 circuit high fault. 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 1997 Ford F150 indicates Intake Air Temperature Sensor 2 Circuit High.
Common causes
Common causes include Faulty IAT Sensor: The most common cause of the P1115 code is a malfunctioning Intake Air Temperature sensor, Wiring Issues: Damaged or corroded wiring connecting the IAT sensor to the ECM can lead to high voltage signals, ECM Malfunction: A problem with the Engine Control Module can also trigger the IAT sensor 2 circuit high fault.
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 17, 2024
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Code P1115 1997 Ford F150 Description

The P1115 diagnostic trouble code (DTC) for a 1997 Ford F150 indicates a problem with the Intake Air Temperature Sensor 2 Circuit being too high. The Intake Air Temperature (IAT) sensor is a crucial component of the vehicle's engine management system. It measures the temperature of the air entering the engine, which is essential for determining the correct air-fuel mixture for combustion. When the IAT sensor 2 circuit reads a high voltage signal, it suggests that the intake air temperature is higher than expected, potentially leading to incorrect fuel delivery and timing adjustments by the engine control module (ECM).

OBDII Code P1115 1997 Ford F150 - Intake Air Temperature Sensor 2 Circuit High
P1115 1997 Ford F150 Code - Intake Air Temperature Sensor 2 Circuit High

Common Causes of P1115 1997 Ford F150

  1. Faulty IAT Sensor: The most common cause of the P1115 code is a malfunctioning Intake Air Temperature sensor.
  2. Wiring Issues: Damaged or corroded wiring connecting the IAT sensor to the ECM can lead to high voltage signals.
  3. ECM Malfunction: A problem with the Engine Control Module can also trigger the IAT sensor 2 circuit high fault.
  4. Intake Air Leaks: Air leaks in the intake system can affect the temperature readings, causing the sensor to report inaccurately high temperatures.
  5. Poor Electrical Connections: Loose or poor electrical connections between the sensor and ECM can result in high voltage signals.

Symptoms of P1115 1997 Ford F150

  1. Check Engine Light: The most common symptom associated with the P1115 code is the illumination of the check engine light on the vehicle's dashboard.
  2. Reduced Fuel Efficiency: Incorrect intake air temperature readings can lead to suboptimal fuel delivery, resulting in decreased fuel efficiency.
  3. Engine Misfires: A high intake air temperature signal may cause the engine to misfire or run rough due to incorrect fuel-air mixture.
  4. Rough Idle: The engine may exhibit a rough or unstable idle when the IAT sensor 2 circuit reports a high temperature.
  5. Emission Issues: Incorrect fuel delivery can lead to increased emissions, potentially causing the vehicle to fail emissions tests.

How to Fix P1115 1997 Ford F150

  1. Diagnose the Issue: Use a diagnostic scanner to retrieve the P1115 code and perform a thorough inspection of the IAT sensor, wiring, and connections.
  2. Replace the IAT Sensor: If the sensor is found to be faulty, replace it with a new, OEM-quality sensor.
  3. Check Wiring and Connections: Inspect the wiring harness for any damage or corrosion, and ensure all connections are secure and free of debris.
  4. Clear the Code: After repairing the issue, clear the DTC using a diagnostic scanner to reset the check engine light.
  5. Test Drive: Take the vehicle for a test drive to ensure that the repair has resolved the P1115 code and that the engine is operating correctly.

Cost to Fix P1115 1997 Ford F150

The cost of repairing a P1115 code on a 1997 Ford F150 can vary depending on the specific cause of the issue and the labor rates in your area. Typically, the cost of replacing an Intake Air Temperature sensor ranges from $50 to $150, depending on the brand and quality of the sensor. The total repair cost, including parts and labor, can range from $100 to $300. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate. Keep in mind that rates at dealerships or in metropolitan areas may be higher, while independent shops often offer more competitive prices.

What does this mean?

Tech Notes for P1115 1997 Ford F150

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 1997 Ford F150 Code

1. What are common symptoms of OBDII code P1115 on a 1997 Ford F150?

The common symptoms of code P1115 include poor engine performance, rough idling, decreased fuel efficiency, and potential stalling.

2. What does the OBDII code P1115 for a 1997 Ford F150 indicate?

Code P1115 indicates a problem with the Intake Air Temperature Sensor 2 Circuit High in the engine's intake system.

3. What are the possible causes of OBDII code P1115 on a 1997 Ford F150?

Possible causes of code P1115 include a faulty intake air temperature sensor, damaged wiring or connectors, a disconnected sensor, or a problem with the sensor's circuit.

4. How can I diagnose the Intake Air Temperature Sensor 2 Circuit High issue on my 1997 Ford F150?

You can diagnose the issue by visually inspecting the sensor and its wiring for any visible damage, testing the sensor's resistance with a multimeter, and checking for proper voltage supply to the sensor.

5. Can a dirty air filter trigger OBDII code P1115 on a 1997 Ford F150?

Yes, a dirty air filter can disrupt the airflow to the intake air temperature sensor, potentially causing it to give a false high reading and triggering code P1115.

6. How do I repair OBDII code P1115 on my 1997 Ford F150?

To repair code P1115, you may need to replace the intake air temperature sensor, repair any damaged wiring or connectors, ensure the sensor is properly connected, and clear the trouble code from the vehicle's computer.

7. Is it safe to continue driving with OBDII code P1115 present on a 1997 Ford F150?

It is not recommended to continue driving with code P1115 present, as it can lead to further engine issues and potentially affect the vehicle's performance and fuel efficiency.

8. Can a DIY enthusiast fix OBDII code P1115 on a 1997 Ford F150?

If you have experience working on automotive systems and access to the necessary tools, you may be able to diagnose and repair code P1115 yourself. However, it is recommended to consult a professional if you are unsure.

9. Will resetting the OBDII system clear code P1115 on a 1997 Ford F150?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing code P1115 is not addressed, the code is likely to reappear once the system detects the problem again.

10. Can extreme weather conditions trigger OBDII code P1115 on a 1997 Ford F150?

Extreme weather conditions, particularly high temperatures, can affect the intake air temperature sensor readings and potentially trigger code P1115 on a 1997 Ford F150.

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