AutoCodes – GMC – P112E GMC

P112E GMC Code - Intake Air Temperature Sensor 3 Circuit Intermittent

Quick Answer

The Intake Air Temperature (IAT) sensor contains a semiconductor device which changes the resistance based on the temperature (a thermistor). Common causes include Faulty Intake Air Temperature 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: P112E GMC indicates Intake Air Temperature Sensor 3 Circuit Intermittent.
Common causes: Common causes include Faulty Intake Air Temperature 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 1,117

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 29, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P112E GMC Description

The Intake Air Temperature (IAT) sensor contains a semiconductor device which changes the resistance based on the temperature (a thermistor). The IAT sensor is located in the air intake passage of the engine air induction system. The IAT sensor has a signal circuit and a ground circuit. The Powertrain Control Module (PCM) monitors the Intake Air Temperature Sensor signal. The PCM sets the OBDII code when the Intake Air Temperature Sensor signal is out of factory specifications.

OBDII Code P112E GMC - Intake Air Temperature Sensor 3 Circuit Intermittent - AutoCodes.com — P112E GMC Code - Intake Air Temperature Sensor 3 Circuit Intermittent

What does this mean?

What are the Possible Causes of the DTC P112E GMC?

Faulty Intake Air Temperature sensor
Intake Air Temperature sensor harness is open or shorted
Intake Air Temperature sensor circuit poor electrical connection

How to Fix the DTC P112E GMC?

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 P112E GMC 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 P112E GMC code?

Need more information on how to fix the P112E GMC code? Get Access to Factory Service Manuals

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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 P112E GMC Code

1. What are the common symptoms of OBDII code P112E GMC (Intake Air Temperature Sensor 3 Circuit Intermittent)?

The common symptoms include rough idling, decreased fuel efficiency, and potential stalling of the vehicle.

2. What are the possible causes of the OBDII code P112E GMC?

Possible causes include a faulty intake air temperature sensor, damaged wiring or connectors related to the sensor, or issues with the sensor circuit.

3. How can I diagnose the cause of OBDII code P112E GMC?

You can diagnose the code using a diagnostic scanner to read the specific sensor data and check for any irregularities in the intake air temperature sensor readings.

4. Can a dirty air filter trigger the OBDII code P112E GMC?

Yes, a dirty air filter can disrupt the intake air temperature readings and potentially lead to the triggering of the code.

5. What is the importance of the intake air temperature sensor in a vehicle?

The intake air temperature sensor helps the engine control module adjust the air-fuel mixture for optimal combustion, leading to better engine performance and fuel efficiency.

6. How can I repair OBDII code P112E GMC related to the intake air temperature sensor?

Repairing the code may involve replacing the faulty intake air temperature sensor, repairing any damaged wiring or connectors, or clearing any debris obstructing the sensor's functioning.

7. Is it safe to continue driving with OBDII code P112E GMC active?

It is not recommended to drive with the code active, as it can lead to further engine performance issues and potential damage if left unresolved.

8. Can resetting the OBDII system clear the P112E GMC code permanently?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing the code is not addressed, it is likely to reoccur.

9. Can a DIY enthusiast repair OBDII code P112E GMC at home?

Depending on the level of expertise, a DIY enthusiast may be able to diagnose and repair the code by following proper diagnostic procedures and utilizing the necessary tools.

10. How can regular maintenance help prevent the occurrence of OBDII code P112E GMC?

Regular maintenance, such as replacing air filters and checking sensor connections during tune-ups, can help prevent issues with the intake air temperature sensor and reduce the likelihood of triggering the code.