Engine-CodesLincoln – P1112 Lincoln

P1112 Lincoln Code - Intake Air Temperature Sensor Intermittent Condition

Quick Answer

The P1112 diagnostic trouble code (DTC) for Lincoln vehicles indicates an intermittent condition with the Intake Air Temperature (IAT) sensor. Common causes include Faulty Intake Air Temperature (IAT) sensor, Damaged wiring or connectors, Dirty or contaminated 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
P1112 Lincoln indicates Intake Air Temperature Sensor Intermittent Condition.
Common causes
Common causes include Faulty Intake Air Temperature (IAT) sensor, Damaged wiring or connectors, Dirty or contaminated 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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1112 Lincoln Description

The P1112 diagnostic trouble code (DTC) for Lincoln vehicles indicates an intermittent condition with the Intake Air Temperature (IAT) sensor. The IAT sensor is a crucial component of the engine control system, responsible for measuring the temperature of the incoming air into the engine. This information is used by the engine control module (ECM) to adjust fuel mixture and ignition timing for optimal performance and efficiency.

OBDII Code P1112 Lincoln - Intake Air Temperature Sensor Intermittent Condition
P1112 Lincoln Code - Intake Air Temperature Sensor Intermittent Condition

Common Causes of P1112 Lincoln

  1. Faulty Intake Air Temperature (IAT) sensor
  2. Damaged wiring or connectors
  3. Dirty or contaminated sensor
  4. Issues with the Engine Control Module (ECM)
  5. Environmental factors such as extreme temperatures or moisture

Symptoms of P1112 Lincoln

  1. Check Engine Light illuminated
  2. Poor fuel economy
  3. Rough idling or stalling
  4. Lack of power or acceleration

How to Fix P1112 Lincoln

  1. Begin by locating the IAT sensor in the intake air duct or air cleaner assembly.
  2. Inspect the sensor, wiring, and connectors for any visible damage or contamination.
  3. Test the sensor using a multimeter to check for proper resistance values.
  4. If the sensor is faulty, replace it with a new OEM or aftermarket sensor.
  5. Clear the DTC and perform a test drive to ensure the issue has been resolved.

Cost to Fix P1112 Lincoln

The typical repair costs for addressing an intermittent condition with the Intake Air Temperature (IAT) sensor on a Lincoln vehicle can range from $100 to $300, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It is recommended to check local rates for a more accurate estimate.

Tech Notes for P1112 Lincoln

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 Lincoln Code

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