AutoCodesMitsubishi – P0112 Mitsubishi

P0112 Mitsubishi Code - Intake Air Temperature Sensor Low Input

Quick Answer

The Intake Air Temperature (IAT) sensor is built into mass air flow sensor or in some vehicles mounted to the air filter duct housing. Common causes include Faulty Intake Air Temperature (IAT) sensor, Dirty air filter, Intake Air Temperature (IAT) sensor harness is open or shorted. 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 Mitsubishi indicates Intake Air Temperature Sensor Low Input.
Common causes
Common causes include Faulty Intake Air Temperature (IAT) sensor, Dirty air filter, Intake Air Temperature (IAT) sensor harness is open or shorted.
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 7,184
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0112 Mitsubishi Description

The Intake Air Temperature (IAT) sensor is built into mass air flow sensor or in some vehicles mounted to the air filter duct housing. The sensor detects intake air temperature and transmits a signal to the Engine Control Module (ECM).The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. Electrical resistance of the thermistor decreases in response to the temperature rise. The Intake Air Temperature signal is used as an input for various systems in the vehicle.
OBDII Code P0112 Mitsubishi - Intake Air Temperature Sensor Low Input - AutoCodes.com
P0112 Mitsubishi Code - Intake Air Temperature Sensor Low Input

What are the Possible Causes of the DTC P0112 Mitsubishi?

  • Faulty Intake Air Temperature (IAT) sensor
  • Dirty air filter
  • Intake Air Temperature (IAT) sensor harness is open or shorted
  • Intake Air Temperature (IAT) sensor circuit poor electrical connection

How to Fix the DTC P0112 Mitsubishi?

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 Mitsubishi 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.

Need more information about the P0112 Mitsubishi code?

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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 Mitsubishi Code

1. What does OBDII code P0112 mean for a Mitsubishi?

P0112 indicates that the intake air temperature (IAT) sensor is reporting a low voltage signal, which suggests extremely low air temperature readings or a sensor issue.

2. What are the symptoms of code P0112 in a Mitsubishi?

Symptoms may include poor engine performance, rough idling, reduced fuel efficiency, or difficulty starting the engine, along with the check engine light.

3. What causes code P0112 in a Mitsubishi?

Common causes include a faulty IAT sensor, damaged wiring or connectors, a short circuit, or an issue with the engine control module (ECM).

4. Can a dirty air filter trigger code P0112?

While unlikely, a severely clogged air filter could potentially affect airflow and temperature readings, indirectly contributing to the issue.

5. How do I fix code P0112 on my Mitsubishi?

Inspect and clean the IAT sensor, check for damaged wiring or connectors, and replace the sensor if necessary. Reset the code after repairs.

6. Where is the IAT sensor located in a Mitsubishi?

The IAT sensor is typically located in the intake manifold or air intake hose, near the engine air filter housing.

7. Can I drive my Mitsubishi with code P0112 active?

While the car may still run, driving with code P0112 can lead to poor fuel efficiency and long-term engine performance issues. Prompt diagnosis and repair are recommended.

8. How do I test the IAT sensor for code P0112?

You can use a multimeter to measure the resistance of the IAT sensor. Compare the readings with the manufacturer’s specifications to determine if the sensor is faulty.

9. Does code P0112 affect emissions in a Mitsubishi?

Yes, an inaccurate intake air temperature reading can disrupt the air-fuel mixture, potentially leading to higher emissions.

10. How much does it cost to fix code P0112 in a Mitsubishi?

Costs vary depending on the issue, but replacing an IAT sensor typically costs $50-$150, plus labor if done professionally. Wiring repairs may cost more.

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