AutoCodes – Lincoln – P0112 Lincoln

P0112 Lincoln Code - Intake Air Temperature Sensor 1 Circuit Low Input

Quick Answer

The Intake Air Temperature (IAT) Sensor is a thermistor device in which resistance changes with temperature. Common causes include Faulty Intake Air Temperature (IAT) 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: P0112 Lincoln indicates Intake Air Temperature Sensor 1 Circuit Low Input.
Common causes: Common causes include Faulty Intake Air Temperature (IAT) 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 937

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 Sep 22, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0112 Lincoln Description

The Intake Air Temperature (IAT) Sensor is a thermistor device in which resistance changes with temperature. The 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 pins 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. The 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 airflow.
The IAT sensor provides a quicker temperature change response time than the Engine Coolant Temperature (ECT) or Cylinder Head Temperature (CHT) sensor.
Currently, there are 2 types of IAT sensors used, a stand-alone and an integrated type. Both types function the same, however, the integrated type is incorporated into the Mass Air Flow (MAF) Sensor, the Manifold Absolute Pressure and Temperature (MAPT) Sensor, or the Turbocharger Intake Pressure and Temperature (TCIPT) Sensor instead of being a stand-alone sensor.
This Diagnostic Trouble Code (DTC) will be set if the IAT Sensor signal is less than the self-test minimum.

OBDII Code P0112 Lincoln - Intake Air Temperature Sensor 1 Circuit Low Input - AutoCodes.com — P0112 Lincoln Code - Intake Air Temperature Sensor 1 Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0112 Lincoln?

Faulty Intake Air Temperature (IAT) Sensor
Intake Air Temperature Sensor harness is open or shorted
Intake Air Temperature Sensor circuit poor electrical connection

How to Fix the DTC P0112 Lincoln?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0112 Lincoln 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 P0112 Lincoln Code

1. What are the common symptoms of OBDII code P0112 in a Lincoln related to the Intake Air Temperature Sensor 1 Circuit Low Input?

The common symptoms include poor engine performance, decreased fuel efficiency, rough idling, and potentially stalling.

2. What typically causes the OBDII code P0112 in a Lincoln related to the Intake Air Temperature Sensor 1 Circuit Low Input?

The code P0112 usually indicates a faulty intake air temperature sensor, a damaged sensor connector or wiring, or issues with the sensor circuit.

3. How can I diagnose the OBDII code P0112 in a Lincoln related to the Intake Air Temperature Sensor 1 Circuit Low Input?

Diagnosing this code involves checking the intake air temperature sensor for proper operation, inspecting the wiring and connector for damage, and using a multimeter to test the sensor circuit.

4. Can a dirty air filter trigger the OBDII code P0112 in a Lincoln related to the Intake Air Temperature Sensor 1 Circuit Low Input?

Yes, a dirty air filter can affect the intake air temperature readings and potentially trigger the code P0112. It's recommended to check and replace a dirty air filter if necessary.

5. Is it safe to continue driving with the OBDII code P0112 in a Lincoln related to the Intake Air Temperature Sensor 1 Circuit Low Input?

Continuing to drive with this code may lead to poor engine performance and reduced fuel efficiency. It's advisable to address the issue promptly to prevent further damage.

6. How can I repair the OBDII code P0112 in a Lincoln related to the Intake Air Temperature Sensor 1 Circuit Low Input?

Repairing this code may involve replacing the intake air temperature sensor, repairing any damaged wiring or connectors, or resetting the fault code after addressing the underlying issue.

7. Are there any DIY tips for fixing the OBDII code P0112 in a Lincoln related to the Intake Air Temperature Sensor 1 Circuit Low Input?

DIY enthusiasts can attempt to visually inspect the sensor and its connections, clean any dirt or debris, and carefully check the wiring for any visible damage before considering sensor replacement.

8. Can extreme weather conditions trigger the OBDII code P0112 in a Lincoln related to the Intake Air Temperature Sensor 1 Circuit Low Input?

Yes, extreme temperatures can affect the intake air temperature readings and potentially trigger the code P0112. It's important to consider the environmental factors when diagnosing this issue.

9. How much does it typically cost to repair the OBDII code P0112 in a Lincoln related to the Intake Air Temperature Sensor 1 Circuit Low Input?

The cost of repairing this code can vary depending on the exact cause of the issue, but it may range from $100 to $300, including parts and labor.

10. Will resetting the OBDII code P0112 in a Lincoln related to the Intake Air Temperature Sensor 1 Circuit Low Input make it go away permanently?

Resetting the code without addressing the underlying problem will not make it go away permanently. It's crucial to diagnose and repair the root cause to prevent the code from reoccurring.