P112D Buick Code - Intake Air Temperature Sensor 3 Circuit High Voltage
Quick Answer
The P112D diagnostic trouble code for Buick vehicles specifically refers to the Intake Air Temperature Sensor 3 Circuit High Voltage. Common causes include Faulty intake air temperature sensor, Wiring issues (short circuit or open circuit), Malfunctioning 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
- P112D Buick indicates Intake Air Temperature Sensor 3 Circuit High Voltage.
- Common causes
- Common causes include Faulty intake air temperature sensor, Wiring issues (short circuit or open circuit), Malfunctioning 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.
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Code P112D Buick Description
The P112D diagnostic trouble code for Buick vehicles specifically refers to the Intake Air Temperature Sensor 3 Circuit High Voltage. This code indicates that there is a high voltage condition detected in the circuit of the intake air temperature sensor 3. The intake air temperature sensor is a crucial component of the engine management system, responsible for measuring the temperature of the incoming air to the engine. This information is used by the engine control module (ECM) to adjust fuel delivery and ignition timing for optimal performance and efficiency.
Common Causes of P112D Buick
- Faulty intake air temperature sensor
- Wiring issues (short circuit or open circuit)
- Malfunctioning ECM
- Poor electrical connections
- Environmental factors affecting sensor performance
Symptoms of P112D Buick
- Decreased fuel efficiency
- Rough idling
- Hesitation during acceleration
- Engine stalling
- Increased emissions
How to Fix P112D Buick
- Begin by diagnosing the issue using a scan tool to retrieve the trouble code and perform further testing to identify the root cause.
- Inspect the wiring harness and connections for any signs of damage, corrosion, or loose connections. Repair or replace as needed.
- Test the intake air temperature sensor for proper operation and replace if faulty.
- Clear the trouble code from the ECM memory and reset the system to see if the issue reoccurs.
- Road test the vehicle to ensure the problem has been resolved and that the engine operates smoothly.
Cost to Fix P112D Buick
The typical repair costs for addressing the P112D Buick diagnostic trouble code can vary depending on the exact cause of the issue and the labor rates at the auto repair shop. In general, replacing a faulty intake air temperature sensor or repairing wiring issues may cost between $100 to $300, including parts and labor. However, additional diagnostic time and potential ECM replacement could increase the total repair cost. It is advisable to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on the specific circumstances of the vehicle. Additionally, factors such as location, vehicle make and model, and engine type can influence the overall repair costs.
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