P1112 Buick Code - Intake Air Temperature Sensor Circuit Intermittent Low Voltage
Quick Answer
The P1112 Buick code indicates a problem with the Intake Air Temperature (IAT) sensor circuit, specifically intermittent low voltage. Common causes include Faulty Intake Air Temperature (IAT) sensor, Damaged wiring or connectors in the IAT sensor circuit, Corrosion or poor connections in the sensor circuit. 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
- P1112 Buick indicates Intake Air Temperature Sensor Circuit Intermittent Low Voltage.
- Common causes
- Common causes include Faulty Intake Air Temperature (IAT) sensor, Damaged wiring or connectors in the IAT sensor circuit, Corrosion or poor connections in the sensor circuit.
- 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 P1112 Buick Description
The P1112 Buick code indicates a problem with the Intake Air Temperature (IAT) sensor circuit, specifically intermittent low voltage. 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. When the ECM detects a low voltage signal from the IAT sensor intermittently, it can lead to a variety of issues with the vehicle's performance.
Common Causes of P1112 Buick
- Faulty Intake Air Temperature (IAT) sensor
- Damaged wiring or connectors in the IAT sensor circuit
- Corrosion or poor connections in the sensor circuit
- ECM software or hardware issues
- Environmental factors such as extreme temperatures affecting sensor operation
Symptoms of P1112 Buick
- Decreased fuel efficiency
- Rough idling or stalling
- Hesitation or lack of power during acceleration
- Difficulty starting the engine
- Check Engine Light illuminated on the dashboard
How to Fix P1112 Buick
- Use a diagnostic scanner to retrieve the specific trouble code and verify the issue.
- Inspect the wiring and connectors in the IAT sensor circuit for damage or corrosion. Repair or replace as needed.
- Test the IAT sensor using a multimeter to ensure it is functioning correctly. Replace the sensor if it is faulty.
- Clear the trouble code from the ECM using the diagnostic scanner and test drive the vehicle to confirm the issue has been resolved.
- If the problem persists, further diagnostic testing may be necessary to identify any underlying issues with the ECM or other components.
Cost to Fix P1112 Buick
The cost of repairing a P1112 Buick code can vary depending on the specific cause of the issue. In general, the cost of a new Intake Air Temperature (IAT) sensor ranges from $20 to $100, depending on the vehicle make and model. Labor costs for this repair can range from $80 to $150 per hour, with the total repair time typically less than an hour. Overall, the total repair cost for this issue may range from $100 to $300, including parts and labor. It is advisable to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on your vehicle's specific needs.
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