AutoCodes – Ford – P1112 2000 Ford F150

P1112 2000 Ford F150 Code - Intake Air Temperature Sensor Intermittent

Quick Answer

The IAT sensor is a thermistor device in which resistance changes with temperature. Common causes include Faulty Intake Air Temperature Sensor, Intake Air Temperature Sensor harness is open or shorted, Intake Air Temperature Sensor circuit poor electrical connection. 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 2000 Ford F150 indicates Intake Air Temperature Sensor Intermittent .
Common causes: Common causes include Faulty Intake Air Temperature Sensor, Intake Air Temperature Sensor harness is open or shorted, Intake Air Temperature Sensor circuit poor electrical connection.
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.

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Code Popularity 2,263

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 19, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1112 2000 Ford F150 Description

The IAT sensor is a thermistor device in which resistance changes with temperature. The electrical resistance of a thermistor decreases as the temperature increases, and the resistance increases as the temperature decreases. The varying resistance affects the voltage drop across the sensor terminals and provides electrical signals to the Powertrain Control Module (PCM) corresponding to temperature.
Thermistor-type sensors are considered passive sensors. A passive sensor is connected to a voltage divider network so that varying the resistance of the passive sensor causes a variation in total current flow. Voltage that is dropped across a fixed resistor in a series with the sensor resistor determines the voltage signal at the PCM. This voltage signal is equal to the reference voltage minus the voltage drop across the fixed resistor.
The IAT sensor provides air temperature information to the PCM. The PCM uses the air temperature information as a correction factor in the calculation of fuel, spark, and air flow.
The IAT sensor provides a quicker temperature change response time than the ECT or CHT sensor.
Currently there are 2 types of IAT sensors used, a stand alone, non-integrated type and an integrated type. Both types function the same, however the integrated type is incorporated into the mass air flow (MAF) sensor instead of being a stand-alone sensor.

OBDII Code P1112 2000 Ford F150 - Intake Air Temperature Sensor Intermittent - AutoCodes.com — P1112 2000 Ford F150 Code - Intake Air Temperature Sensor Intermittent

What does this mean?

What are the Possible Causes of the DTC P1112 2000 Ford F150?

Faulty Intake Air Temperature Sensor
Intake Air Temperature Sensor harness is open or shorted
Intake Air Temperature Sensor circuit poor electrical connection
Damaged Powertrain Control Module (PCM)

How to Fix the DTC P1112 2000 Ford F150?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1112 2000 Ford F150 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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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 2000 Ford F150 Code

1. What are the common symptoms of an Intake Air Temperature Sensor Intermittent fault (OBDII code P1112) in a 2000 Ford F150?

- Common symptoms include poor engine performance, rough idling, stalling, and a decrease in fuel efficiency.

2. What are the potential causes of an Intake Air Temperature Sensor Intermittent fault in a 2000 Ford F150?

- Causes may include a faulty intake air temperature sensor, wiring issues, loose connections, or a problem with the sensor circuit.

3. How can I diagnose an Intake Air Temperature Sensor Intermittent fault in my 2000 Ford F150?

- Use an OBDII scanner to retrieve the specific trouble code (P1112). Check the sensor's wiring harness for damage or loose connections. Test the sensor using a multimeter to determine if it is functioning properly.

4. Can I drive my 2000 Ford F150 with an Intake Air Temperature Sensor Intermittent fault?

- It is not recommended to drive with this fault as it can lead to decreased engine performance and potential further damage. It's best to address the issue promptly.

5. How can I repair an Intake Air Temperature Sensor Intermittent fault in my 2000 Ford F150?

- Replace the faulty intake air temperature sensor if it is determined to be the cause of the issue. Ensure all connections are secure and wiring is in good condition.

6. Are there any DIY tips for troubleshooting an Intake Air Temperature Sensor Intermittent fault in a 2000 Ford F150?

- You can visually inspect the sensor and its connections for any obvious signs of damage. Additionally, checking the sensor's resistance with a multimeter can help determine if it is functioning correctly.

7. Will resetting the OBDII code P1112 in my 2000 Ford F150 make the Intake Air Temperature Sensor Intermittent fault go away?

- Resetting the code may temporarily clear the fault, but if the underlying issue is not addressed, the code is likely to reappear. It's crucial to diagnose and fix the root cause of the problem.

8. How much does it typically cost to replace the Intake Air Temperature Sensor in a 2000 Ford F150?

- The cost of a new intake air temperature sensor can vary depending on the brand and where it is purchased. On average, the part itself can range from $20 to $100, not including labor costs if you choose to have a professional install it.

9. Can a faulty Intake Air Temperature Sensor cause other problems in a 2000 Ford F150?

- Yes, a faulty sensor can lead to incorrect air/fuel mixture calculations, which can result in poor engine performance, decreased fuel efficiency, and potential damage to other engine components over time.

10. How long does it take to replace the Intake Air Temperature Sensor in a 2000 Ford F150?

- The replacement process typically takes around 30 minutes to an hour, depending on the accessibility of the sensor and any additional components that may need to be removed for access.