P0112 Buick Code - Intake Air Temperature Sensor Circuit Low Voltage
Quick Answer
The P0112 Buick code indicates a problem with the Intake Air Temperature (IAT) sensor circuit, specifically that the voltage is lower than expected. Common causes include Faulty IAT sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or poor connection at the sensor terminals. 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
- P0112 Buick indicates Intake Air Temperature Sensor Circuit Low Voltage.
- Common causes
- Common causes include Faulty IAT sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or poor connection at the sensor terminals.
- 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 P0112 Buick Description
The P0112 Buick code indicates a problem with the Intake Air Temperature (IAT) sensor circuit, specifically that the voltage is lower than expected. The IAT sensor is a crucial component of the engine management system, as it measures the temperature of the air entering the engine. This information is used by the Engine Control Module (ECM) to adjust the air-fuel mixture for optimal combustion and engine performance.
Common Causes of P0112 Buick
- Faulty IAT sensor
- Damaged wiring or connectors in the sensor circuit
- Corrosion or poor connection at the sensor terminals
- ECM software issue
- Intake air leaks near the sensor
Symptoms of P0112 Buick
- Decreased fuel efficiency
- Rough idling or stalling
- Hesitation or lack of power during acceleration
- Check Engine Light illuminated
- Increased emissions
How to Fix P0112 Buick
- Begin by locating the IAT sensor, typically located in the air intake duct or near the throttle body.
- Inspect the sensor and its wiring for any visible damage or corrosion. Replace the sensor if necessary.
- Check the wiring and connectors for any breaks or loose connections. Repair or replace as needed.
- Clear the diagnostic trouble codes from the ECM using a scan tool.
- Test drive the vehicle to ensure the issue has been resolved and the code does not return.
Cost to Fix P0112 Buick
The cost of repairing a P0112 Buick code can vary depending on the specific cause of the issue. In general, the price of a new IAT sensor ranges from $20 to $50, while the cost of labor for diagnosis and repair can range from $100 to $200. Therefore, the total repair cost could be anywhere from $120 to $250. It is important to note that these are rough estimates, and actual costs may differ based on factors such as location, vehicle make and model, and labor rates at the auto repair shop. It is recommended to obtain quotes from local shops for a more accurate estimate.
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