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Engine-Codes – Ford – P1112 1997 Ford F150

P1112 1997 Ford F150 Code - Intake Air Temperature Sensor Intermittent

Quick Answer

The diagnostic trouble code P1112 for a 1997 Ford F150 indicates an issue with the Intake Air Temperature (IAT) sensor that is intermittent. Common causes include Faulty IAT sensor, Loose or corroded electrical connections to the sensor, Wiring harness issues. 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
P1112 1997 Ford F150 indicates Intake Air Temperature Sensor Intermittent .
Common causes
Common causes include Faulty IAT sensor, Loose or corroded electrical connections to the sensor, Wiring harness issues.
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 P1112 1997 Ford F150 Description

The diagnostic trouble code P1112 for a 1997 Ford F150 indicates an issue with the Intake Air Temperature (IAT) sensor that is intermittent. The IAT sensor is a crucial component of the vehicle's engine management system, as it measures the temperature of the air entering the engine. This information is used by the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion efficiency. An intermittent fault with the IAT sensor can lead to incorrect readings being sent to the ECM, resulting in poor engine performance, reduced fuel efficiency, and potentially causing damage to the engine over time.

OBDII Code P1112 1997 Ford F150 - Intake Air Temperature Sensor Intermittent
P1112 1997 Ford F150 Code - Intake Air Temperature Sensor Intermittent

Common Causes of P1112 1997 Ford F150

  1. Faulty IAT sensor
  2. Loose or corroded electrical connections to the sensor
  3. Wiring harness issues
  4. Intermittent sensor signal due to environmental factors (e.g., heat, moisture)

Symptoms of P1112 1997 Ford F150

  1. Check engine light illuminated
  2. Decreased fuel efficiency
  3. Rough idling or stalling
  4. Engine misfires
  5. Reduced engine power

How to Fix P1112 1997 Ford F150

  1. Begin by locating the IAT sensor, typically located near the air intake manifold.
  2. Inspect the sensor and its wiring for any visible damage, corrosion, or loose connections.
  3. Test the sensor using a multimeter to ensure it is functioning within the manufacturer's specified parameters.
  4. If the sensor is faulty, replace it with a new one and ensure it is properly calibrated.
  5. Clear the trouble code from the ECM's memory using an OBD-II scanner and test drive the vehicle to confirm the issue has been resolved.

Cost to Fix P1112 1997 Ford F150

The cost of repairing the Intake Air Temperature Sensor Intermittent issue on a 1997 Ford F150 can vary depending on the location, labor rates, and the price of the sensor itself. Typically, the cost of a new IAT sensor ranges from $20 to $100, depending on the brand and quality. Labor costs can range from $80 to $150 per hour, with the total repair time estimated at around 1-2 hours. Therefore, the total cost of repairing this issue could range from $100 to $300, including parts and labor. It is advisable to contact local auto repair shops for a more accurate estimate based on your specific circumstances.

What does this mean?

Tech Notes for P1112 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 P1112 1997 Ford F150 Code

1. What are the common symptoms of an Intake Air Temperature Sensor Intermittent issue (OBDII code P1112) in a 1997 Ford F150?

The common symptoms include rough idling, poor fuel efficiency, engine stalling, and hesitation during acceleration.

2. What are the possible causes of the Intake Air Temperature Sensor Intermittent fault code on a 1997 Ford F150?

The fault code P1112 could be triggered by a faulty intake air temperature sensor, damaged wiring or connectors, or a problem with the sensor circuit.

3. How can I diagnose the Intake Air Temperature Sensor Intermittent issue on my 1997 Ford F150?

You can diagnose the issue by visually inspecting the sensor and its wiring, checking for any loose or damaged connections, and using a multimeter to test the sensor's resistance.

4. Can I drive my 1997 Ford F150 with the Intake Air Temperature Sensor Intermittent fault code?

It is not recommended to drive the vehicle with this fault code as it can lead to poor engine performance and potential damage if left unresolved.

5. How do I repair the Intake Air Temperature Sensor Intermittent issue on my 1997 Ford F150?

To repair the issue, you may need to replace the faulty intake air temperature sensor, repair any damaged wiring or connectors, and clear the fault code using an OBDII scanner.

6. Are there any DIY tips for fixing the Intake Air Temperature Sensor Intermittent issue on a 1997 Ford F150?

While some basic troubleshooting steps can be done at home, it is recommended to consult a professional mechanic for a proper diagnosis and repair of the issue.

7. Can a faulty Intake Air Temperature Sensor Intermittent cause other problems in my 1997 Ford F150?

Yes, a faulty sensor can cause additional issues such as incorrect air/fuel mixture, engine misfires, and increased emissions.

8. How much does it cost to replace the Intake Air Temperature Sensor on a 1997 Ford F150?

The cost of replacing the sensor can vary depending on the brand, labor costs, and location, but it typically ranges from $50 to $150 for the part itself.

9. Will resetting the OBDII code P1112 on my 1997 Ford F150 fix the Intake Air Temperature Sensor Intermittent issue?

Resetting the code may temporarily clear the fault, but if the underlying issue is not addressed, the code is likely to reappear once the problem persists.

10. Is the Intake Air Temperature Sensor Intermittent issue a common problem in 1997 Ford F150 vehicles?

While it may not be one of the most common issues, faulty intake air temperature sensors can occur in older vehicles like the 1997 Ford F150 due to wear and tear over time.

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