P0112 Chevrolet Code - Intake Air Temperature Sensor Circuit Low Voltage
Quick Answer
The P0112 code for Chevrolet vehicles indicates a problem with the Intake Air Temperature (IAT) sensor circuit, specifically that the voltage is too low. Common causes include Faulty Intake Air Temperature (IAT) sensor, Wiring issues or poor connections in the IAT sensor circuit, ECU malfunction. 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 Chevrolet indicates Intake Air Temperature Sensor Circuit Low Voltage.
- Common causes
- Common causes include Faulty Intake Air Temperature (IAT) sensor, Wiring issues or poor connections in the IAT sensor circuit, ECU malfunction.
- 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 Chevrolet Description
The P0112 code for Chevrolet vehicles indicates a problem with the Intake Air Temperature (IAT) sensor circuit, specifically that the voltage is too low. The IAT sensor is responsible for measuring the temperature of the air entering the engine, which is crucial for the engine control unit (ECU) to adjust air-fuel mixture for optimal combustion. When the voltage from the IAT sensor is low, it can lead to incorrect air-fuel mixture, affecting engine performance and emissions.
Common Causes of P0112 Chevrolet
- Faulty Intake Air Temperature (IAT) sensor
- Wiring issues or poor connections in the IAT sensor circuit
- ECU malfunction
- Vacuum leaks in the intake system
- Air filter clogged or dirty
Symptoms of P0112 Chevrolet
- Decreased fuel efficiency
- Rough idling or stalling
- Lack of power during acceleration
- Check Engine Light illuminated
- Engine running too rich or too lean
How to Fix P0112 Chevrolet
- Begin by diagnosing the issue using a scan tool to verify the P0112 code and check for any other related codes.
- Inspect the wiring and connections in the IAT sensor circuit for any damage or corrosion. Repair or replace as needed.
- Test the IAT sensor itself using a multimeter to ensure it is functioning properly. Replace if necessary.
- Check for any vacuum leaks in the intake system and repair as needed.
- Clear the code with the scan tool and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0112 Chevrolet
The cost to repair a P0112 code on a Chevrolet vehicle can vary depending on the specific cause of the issue. In general, the cost of replacing an Intake Air Temperature (IAT) sensor can range from $50 to $150, including parts and labor. If additional repairs or diagnostics are needed, the total cost could increase. It's advisable to check with local auto repair shops for accurate pricing based on your location and vehicle model.
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Information for Specific Chevrolet Models
- P0112 2014 Chevrolet Silverado — Intake Air Temperature Sensor Circuit Low Voltage
- P0112 2015 Chevrolet Silverado — Intake Air Temperature Sensor Circuit Low Voltage
- P0112 2016 Chevrolet Silverado — Intake Air Temperature Sensor Circuit Low Voltage
- P0112 2017 Chevrolet Silverado — Intake Air Temperature Sensor Circuit Low Voltage
- P0112 2018 Chevrolet Silverado — Intake Air Temperature Sensor Circuit Low Voltage
Frequently Asked Questions about P0112 Chevrolet Code
1. What does the OBDII code P0112 mean on a Chevrolet?
P0112 indicates that the intake air temperature (IAT) sensor is reporting a low voltage signal to the engine control module (ECM), suggesting that the sensor is reading an unusually low air temperature.
2. What are the common symptoms of code P0112 in a Chevrolet?
Symptoms may include poor fuel economy, rough idling, reduced engine performance, hard starting, and an illuminated check engine light.
3. What causes the P0112 code on a Chevrolet?
Common causes include a faulty IAT sensor, damaged wiring or connectors, a short circuit in the sensor circuit, or a malfunctioning engine control module.
4. Can I drive my Chevrolet with a P0112 code?
While it may be possible to drive with this code, it is not recommended. The engine may not perform efficiently, and prolonged driving can lead to further damage or increased emissions.
5. How do I fix the P0112 code on a Chevrolet?
Repairs may include replacing the IAT sensor, repairing or replacing damaged wiring or connectors, cleaning the sensor connection, or, in rare cases, replacing the ECM.
6. How do I know if the IAT sensor is faulty for code P0112?
You can test the IAT sensor using a multimeter to check its resistance. If the readings are out of the manufacturer’s specifications, the sensor is likely faulty.
7. Where is the IAT sensor located on a Chevrolet?
The IAT sensor is typically located in the intake manifold or air intake tube, near the air filter box.
8. How much does it cost to fix a P0112 code on a Chevrolet?
Repairs can range from $50 to $300, depending on whether you replace the IAT sensor yourself or need professional diagnostics and repairs.
9. Can a dirty air filter trigger the P0112 code on a Chevrolet?
While unlikely, a severely clogged air filter could potentially affect air intake readings. However, the primary cause is usually related to the IAT sensor or its circuit.
10. Do I need to clear the P0112 code after repairs on my Chevrolet?
Yes, after completing repairs, use an OBDII scanner to clear the code and verify that it does not return. This ensures the issue has been resolved.
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