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

Quick Answer

The P0112 Ford diagnostic trouble code indicates that there is a low input signal coming from the Intake Air Temperature (IAT) sensor 1 circuit. Common causes include Faulty Intake Air Temperature sensor, Damaged or corroded wiring/connectors in the IAT 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 Ford indicates Intake Air Temperature Sensor 1 Circuit Low Input.
Common causes
Common causes include Faulty Intake Air Temperature sensor, Damaged or corroded wiring/connectors in the IAT 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.
What is this?
Table of contents Created and updated by William Orellana on Aug 30, 2024
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Code P0112 Ford Description

The P0112 Ford diagnostic trouble code indicates that there is a low input signal coming from the Intake Air Temperature (IAT) sensor 1 circuit. The IAT sensor plays a crucial role in measuring the temperature of the air entering the engine, providing the Engine Control Module (ECM) with important data to adjust fuel delivery and ignition timing. A low input signal suggests that the IAT sensor is detecting a temperature that is lower than expected, which can lead to incorrect fuel and air mixture adjustments, affecting the engine's performance and efficiency.

OBDII Code P0112 Ford - Intake Air Temperature Sensor 1 Circuit Low Input
P0112 Ford Code - Intake Air Temperature Sensor 1 Circuit Low Input

Common Causes of P0112 Ford

  1. Faulty Intake Air Temperature sensor
  2. Damaged or corroded wiring/connectors in the IAT sensor circuit
  3. Poor electrical connection
  4. Engine coolant temperature sensor issues
  5. Engine running too cold due to thermostat malfunction

Symptoms of P0112 Ford

  1. Decreased fuel efficiency
  2. Engine stalling or hesitation
  3. Rough idling
  4. Illumination of the check engine light
  5. Decreased overall engine performance

How to Fix P0112 Ford

  1. Begin by locating the IAT sensor in the intake air duct or manifold.
  2. Inspect the wiring and connectors for any signs of damage, corrosion, or loose connections.
  3. Test the IAT sensor using a multimeter to ensure it is functioning properly.
  4. Replace the IAT sensor if it is found to be faulty.
  5. Clear the diagnostic trouble codes and test the vehicle to ensure the issue has been resolved.

Cost to Fix P0112 Ford

The cost of repairing a P0112 Ford code can vary depending on the cause of the issue and the specific parts needed. In general, replacing the Intake Air Temperature sensor itself can cost between $50 and $150, while the labor costs can range from $50 to $100. Overall, the total repair cost for this issue may be around $100 to $250. Keep in mind that labor rates and part prices can vary based on location and the specific vehicle model and year. It is recommended to consult with a trusted auto repair shop for a more accurate cost estimate.

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Information for Specific Ford Models

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.

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