P112D GMC Code - Intake Air Temperature Sensor 3 Circuit High Voltage
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
- P112D GMC indicates Intake Air Temperature Sensor 3 Circuit High Voltage.
- 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.
Code P112D GMC Description
What are the Possible Causes of the DTC P112D 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 P112D 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 P112D 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.
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Frequently Asked Questions about P112D GMC Code
1. What are the common symptoms of OBDII code P112D GMC (Intake Air Temperature Sensor 3 Circuit High Voltage)?
The common symptoms include poor engine performance, rough idling, decreased fuel efficiency, and in some cases, the Check Engine light may illuminate.
2. What can cause the OBDII code P112D GMC to trigger?
The code P112D GMC is typically triggered when the Intake Air Temperature Sensor 3 reports a high voltage signal to the engine control module, indicating a potential issue with the sensor or its circuit.
3. How serious is the OBDII code P112D GMC?
While the code itself may not cause immediate engine failure, it can lead to poor engine performance and decreased fuel efficiency if left unresolved. It is recommended to address the issue promptly.
4. What are some possible repair tips for OBDII code P112D GMC?
Some repair tips include checking the wiring and connectors related to the Intake Air Temperature Sensor 3, testing the sensor's functionality, and replacing the sensor if necessary.
5. Can I continue driving my vehicle with the OBDII code P112D GMC?
It is not recommended to drive your vehicle for an extended period with this code present, as it can affect engine performance and fuel efficiency. It is best to address the issue as soon as possible.
6. How can I diagnose the OBDII code P112D GMC at home?
You can use an OBDII scanner to retrieve the code and then perform a visual inspection of the Intake Air Temperature Sensor 3 and its wiring. Testing the sensor's resistance and voltage output can also help diagnose the issue.
7. Is it possible to reset the OBDII code P112D GMC without fixing the underlying problem?
While you can clear the code with an OBDII scanner, it will likely reappear if the root cause of the high voltage signal from the Intake Air Temperature Sensor 3 is not addressed.
8. How much does it cost to repair the OBDII code P112D GMC?
The cost of repairing this code can vary depending on the cause of the issue. It may involve simply replacing the sensor or could require more extensive wiring repairs, with costs ranging from $50 to $300 or more.
9. Can a faulty Intake Air Temperature Sensor 3 cause other issues in the vehicle?
Yes, a faulty sensor can impact the air-fuel mixture, ignition timing, and overall engine performance. It is essential to address any sensor-related issues promptly to prevent further complications.
10. How long does it typically take to repair the OBDII code P112D GMC?
The repair time can vary based on the extent of the issue and the availability of parts. In most cases, it can take anywhere from 1 to 3 hours to diagnose and repair the Intake Air Temperature Sensor 3 circuit high voltage problem.
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