P112E Buick Code - Intake Air Temperature Sensor 3 Circuit Intermittent
Quick Answer
The P112E Buick code indicates a fault in the Intake Air Temperature (IAT) Sensor 3 Circuit, specifically an intermittent issue. Common causes include Faulty Intake Air Temperature (IAT) sensor, Damaged wiring or connectors in the IAT sensor circuit, Corrosion or contamination in the sensor connector. 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 Buick indicates Intake Air Temperature Sensor 3 Circuit Intermittent.
- Common causes
- Common causes include Faulty Intake Air Temperature (IAT) sensor, Damaged wiring or connectors in the IAT sensor circuit, Corrosion or contamination in the sensor connector.
- 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 P112E Buick Description
The P112E Buick code indicates a fault in the Intake Air Temperature (IAT) Sensor 3 Circuit, specifically an intermittent issue. 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. An intermittent problem with this sensor can lead to inaccurate temperature readings, which can affect the engine's performance and fuel efficiency.
Common Causes of P112E Buick
- Faulty Intake Air Temperature (IAT) sensor
- Damaged wiring or connectors in the IAT sensor circuit
- Corrosion or contamination in the sensor connector
- ECM software or hardware issues
Symptoms of P112E Buick
- Check Engine Light illuminated
- Poor fuel economy
- Rough idling
- Hesitation during acceleration
- Engine stalling
How to Fix P112E Buick
- Begin by visually inspecting the wiring and connectors related to the IAT sensor for any damage or corrosion.
- Use a multimeter to test the resistance of the IAT sensor and compare it to the manufacturer's specifications.
- If the sensor is faulty, replace it with a new one and ensure proper installation.
- Clear the diagnostic trouble codes from the ECM using a scan tool and test drive the vehicle to verify that the issue has been resolved.
Cost to Fix P112E Buick
The cost of repairing a P112E Buick code related to the Intake Air Temperature Sensor 3 Circuit Intermittent can vary depending on the specific cause of the issue. In general, the cost of a new IAT sensor can range from $50 to $100, depending on the vehicle make and model. Labor costs for this type of repair can range from $100 to $200, with total repair costs potentially falling between $150 and $300. It is advisable to contact local auto repair shops for more accurate pricing based on your vehicle and location.
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Frequently Asked Questions about P112E Buick Code
1. What does the OBDII code P112E mean on a Buick?
P112E indicates an intermittent issue with the Intake Air Temperature Sensor 3 circuit, which monitors the temperature of air entering the engine.
2. What are the symptoms of code P112E on a Buick?
Common symptoms include poor engine performance, decreased fuel efficiency, rough idling, and possible illumination of the Check Engine Light.
3. What causes the P112E code to trigger on a Buick?
The code can be caused by a faulty Intake Air Temperature Sensor 3, damaged wiring or connectors, or a problem with the engine control module (ECM).
4. Can I drive my Buick with a P112E code?
While your car may still be drivable, continuing to drive with this code can result in reduced performance and potential long-term damage to the engine.
5. How do I fix the P112E code on my Buick?
Inspect and repair any damaged wiring or connectors, test and replace the Intake Air Temperature Sensor 3 if necessary, and clear the code with a scan tool.
6. Where is the Intake Air Temperature Sensor 3 located on a Buick?
The sensor is typically located near the intake manifold or within the air intake system, depending on your Buick model.
7. How much does it cost to fix code P112E on a Buick?
The repair cost can range from $50 to $200, depending on whether the issue is with the sensor, wiring, or labor costs at a repair shop.
8. Can a dirty air filter cause the P112E code on a Buick?
A dirty air filter is unlikely to directly cause this code, but it can contribute to airflow issues that affect sensor readings.
9. How can I prevent the P112E code from recurring on my Buick?
Regularly inspect and maintain the air intake system, including the sensor, wiring, and connectors, and replace any worn components promptly.
10. Will clearing the P112E code fix the problem on my Buick?
Clearing the code with a scan tool will reset the Check Engine Light, but the issue may return if the underlying cause isn’t addressed.
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