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P0112 1997 Ford F150 Code - Intake Air Temperature Sensor Circuit Low Input

Quick Answer

The P0112 code for a 1997 Ford F150 indicates that there is a problem with the Intake Air Temperature (IAT) sensor circuit, specifically that the input signal is lower than the expected range. Common causes include Faulty Intake Air Temperature (IAT) sensor, Damaged wiring or connectors in the sensor circuit, Disconnected or corroded sensor. 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
P0112 1997 Ford F150 indicates Intake Air Temperature Sensor Circuit Low Input.
Common causes
Common causes include Faulty Intake Air Temperature (IAT) sensor, Damaged wiring or connectors in the sensor circuit, Disconnected or corroded sensor.
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 11, 2024
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Code P0112 1997 Ford F150 Description

The P0112 code for a 1997 Ford F150 indicates that there is a problem with the Intake Air Temperature (IAT) sensor circuit, specifically that the input signal is lower than the expected range. The IAT sensor is responsible for measuring the temperature of the air entering the engine, which is crucial for determining the air-fuel mixture and ignition timing. When the sensor detects a low input signal, it can lead to incorrect fuel delivery and ignition timing, resulting in poor engine performance, decreased fuel efficiency, and potential damage to the engine over time.

OBDII Code P0112 1997 Ford F150 - Intake Air Temperature Sensor Circuit Low Input
P0112 1997 Ford F150 Code - Intake Air Temperature Sensor Circuit Low Input

Common Causes of P0112 1997 Ford F150

  1. Faulty Intake Air Temperature (IAT) sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Disconnected or corroded sensor
  4. Engine control module malfunction
  5. Environmental factors affecting sensor readings (e.g., heat soak)

Symptoms of P0112 1997 Ford F150

  1. Decreased fuel efficiency
  2. Engine hesitation or stalling
  3. Rough idling or performance issues
  4. Check Engine Light illuminated
  5. Poor acceleration or throttle response

How to Fix P0112 1997 Ford F150

  1. Begin by locating the IAT sensor, typically located near the air intake manifold.
  2. Inspect the sensor, wiring, and connectors for any visible damage or corrosion.
  3. Test the sensor using a multimeter to check for proper resistance readings.
  4. Replace the IAT sensor if it fails the resistance test or shows signs of damage.
  5. Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0112 1997 Ford F150

The cost of repairing the Intake Air Temperature Sensor Circuit Low Input issue on a 1997 Ford F150 can vary depending on the specific cause of the problem. Typically, the cost of a new IAT sensor ranges from $20 to $50, and labor costs can range from $50 to $150, depending on the shop's hourly rates and the complexity of the repair. In total, the repair could cost anywhere from $70 to $200, excluding any additional diagnostic fees or parts that may be required. It is recommended to consult with a professional mechanic for a more accurate cost estimate based on your specific vehicle and location.

What does this mean?

Tech Notes for P0112 1997 Ford F150

Before replacing the Mass Air Flow (MAF) sensor, try replacing the air filter and cleaning the Mass Air Flow sensor with Mass Air Flow sensor cleaner. Reset code and drive the vehicle. If the code comes back, it may be necessary to replace the Mass Air Flow sensor.

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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 P0112 1997 Ford F150 Code

1. What are the common symptoms of OBDII code P0112 in a 1997 Ford F150?

- Common symptoms include poor engine performance, rough idling, decreased fuel efficiency, and potential stalling or hesitation while driving.

2. What does the Intake Air Temperature Sensor do in a 1997 Ford F150?

- The Intake Air Temperature Sensor measures the temperature of the air entering the engine, providing data to the engine control module for optimal fuel-to-air ratio.

3. What are the possible causes of the Intake Air Temperature Sensor Circuit Low Input code in a 1997 Ford F150?

- Possible causes include a faulty intake air temperature sensor, damaged wiring or connectors, a corroded sensor connector, or a problem with the engine control module.

4. How can I diagnose the cause of OBDII code P0112 in my 1997 Ford F150?

- You can diagnose the issue by inspecting the intake air temperature sensor and its wiring for damage, testing the sensor's resistance, and checking for any loose or corroded connections.

5. Can I still drive my 1997 Ford F150 with OBDII code P0112?

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

6. How can I repair OBDII code P0112 in my 1997 Ford F150?

- To repair this code, you may need to replace the intake air temperature sensor, repair any damaged wiring or connectors, and clear the diagnostic trouble codes from the engine control module.

7. Will resetting the check engine light fix OBDII code P0112 in my 1997 Ford F150?

- Resetting the check engine light may temporarily turn off the warning indicator, but it will not fix the underlying issue causing the code to reappear.

8. Are there any DIY tips for troubleshooting OBDII code P0112 in a 1997 Ford F150?

- You can start by visually inspecting the intake air temperature sensor and its connections, checking for any visible damage or corrosion, and testing the sensor's resistance with a multimeter.

9. Can a bad intake air temperature sensor affect other systems in my 1997 Ford F150?

- Yes, a faulty intake air temperature sensor can affect engine performance, fuel efficiency, and emissions control systems in your vehicle.

10. How much does it typically cost to repair OBDII code P0112 in a 1997 Ford F150?

- The cost of repairing OBDII code P0112 can vary depending on the extent of the issue, but it may range from $50 to $200 for parts and labor.

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