P0112 GMC Code - Intake Air Temperature Sensor Circuit Low Voltage
Quick Answer
The P0112 GMC code indicates that there is a problem with the Intake Air Temperature (IAT) sensor circuit, specifically that the voltage is lower than the specified range. Common causes include Faulty Intake Air Temperature (IAT) sensor, Damaged or corroded wiring/connectors in the IAT sensor circuit, Issues with the Engine Control Unit (ECU). 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 GMC indicates Intake Air Temperature Sensor Circuit Low Voltage.
- Common causes
- Common causes include Faulty Intake Air Temperature (IAT) sensor, Damaged or corroded wiring/connectors in the IAT sensor circuit, Issues with the Engine Control Unit (ECU).
- 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 GMC Description
The P0112 GMC code indicates that there is a problem with the Intake Air Temperature (IAT) sensor circuit, specifically that the voltage is lower than the specified range. The IAT sensor is responsible for measuring the temperature of the air entering the engine, which is crucial for the proper functioning of the engine control unit (ECU). When the voltage from the IAT sensor is too low, it can lead to incorrect air-fuel mixture calculations, affecting the engine's performance and efficiency.
Common Causes of P0112 GMC
- Faulty Intake Air Temperature (IAT) sensor
- Damaged or corroded wiring/connectors in the IAT sensor circuit
- Issues with the Engine Control Unit (ECU)
- Air intake leaks affecting sensor readings
- Incorrect sensor placement or installation
Symptoms of P0112 GMC
- Decreased fuel efficiency
- Rough idling
- Hesitation or stalling during acceleration
- Engine misfires
- Illuminated check engine light
How to Fix P0112 GMC
- Begin by locating the IAT sensor in the air intake system.
- Inspect the sensor, wiring, and connectors for any visible damage or corrosion.
- Test the sensor using a multimeter to check for proper voltage output.
- Replace the IAT sensor if it is found to be faulty.
- Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0112 GMC
The cost of repairing a P0112 GMC code can vary depending on the specific cause of the issue. Typically, the price of a new IAT sensor ranges from $20 to $50, while labor costs can range from $80 to $150 per hour. In total, the repair for this issue could cost anywhere from $100 to $300, including parts and labor. It's important to note that prices may differ based on the location of the repair shop, the make and model of the vehicle, and the extent of the repairs needed. It is advisable to consult with a professional mechanic for a more accurate estimate.
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Information for Specific GMC Models
- P0112 2014 GMC Sierra — Intake Air Temperature Sensor Circuit Low Voltage
- P0112 2015 GMC Sierra — Intake Air Temperature Sensor Circuit Low Voltage
- P0112 2016 GMC Sierra — Intake Air Temperature Sensor Circuit Low Voltage
- P0112 2017 GMC Sierra — Intake Air Temperature Sensor Circuit Low Voltage
- P0112 2018 GMC Sierra — Intake Air Temperature Sensor Circuit Low Voltage
Frequently Asked Questions about P0112 GMC Code
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