Engine-CodesJeep – P0112 Jeep

P0112 Jeep Code - Intake Air Temperature Sensor 1 Circuit Low

Quick Answer

The P0112 code for Jeep vehicles indicates an issue with the Intake Air Temperature (IAT) Sensor 1 Circuit being too low. Common causes include Faulty Intake Air Temperature (IAT) sensor, Damaged wiring or connectors in the sensor circuit, Malfunctioning Engine Control Module (ECM). 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 Jeep indicates Intake Air Temperature Sensor 1 Circuit Low.
Common causes
Common causes include Faulty Intake Air Temperature (IAT) sensor, Damaged wiring or connectors in the sensor circuit, Malfunctioning Engine Control Module (ECM).
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 08, 2024
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Code P0112 Jeep Description

The P0112 code for Jeep vehicles indicates an issue with the Intake Air Temperature (IAT) Sensor 1 Circuit being too low. The IAT sensor is responsible for measuring the temperature of the air entering the engine. This information is crucial for the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion. When the IAT sensor circuit is reading lower than expected, it can lead to incorrect fueling and ignition timing, ultimately affecting the vehicle's performance.

OBDII Code P0112 Jeep - Intake Air Temperature Sensor 1 Circuit Low
P0112 Jeep Code - Intake Air Temperature Sensor 1 Circuit Low

Common Causes of P0112 Jeep

  1. Faulty Intake Air Temperature (IAT) sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Malfunctioning Engine Control Module (ECM)
  4. Electrical interference affecting sensor readings
  5. Extreme temperature conditions affecting sensor accuracy

Symptoms of P0112 Jeep

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Hesitation on acceleration
  4. Engine misfires
  5. Increased emissions output

How to Fix P0112 Jeep

  1. Begin by locating the IAT sensor in the intake air duct or manifold.
  2. Inspect the sensor wiring and connectors for any damage or corrosion.
  3. Test the sensor using a multimeter to check for proper resistance.
  4. If the sensor is faulty, replace it with a new one.
  5. Clear the error code from the ECM memory and test drive the vehicle to ensure the issue is resolved.

Cost to Fix P0112 Jeep

The typical cost to repair the Intake Air Temperature Sensor 1 Circuit Low issue in a Jeep can range from $100 to $300, including parts and labor. However, prices may vary depending on the specific model of Jeep, the location of the repair shop, and the extent of the damage. It's recommended to consult with a professional mechanic to get an accurate estimate for your particular situation.

When is the Code Detected?

An excessively low voltage from the sensor is sent to ECM.

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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.

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