P0111 2017 GMC Sierra Code - Intake Air Temperature Circuit Range/Performance Problem
Quick Answer
The Intake Air Temperature (IAT) sensor 1 is a variable resistor that changes the voltage on the Engine Control Module (ECM) supplied 5 V signal circuit. Common causes include Faulty Intake Air Temperature (IAT) sensor, Intake Air Temperature sensor harness is open or shorted, Intake Air Temperature sensor circuit poor electrical connection. 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
- P0111 2017 GMC Sierra indicates Intake Air Temperature Circuit Range/Performance Problem.
- Common causes
- Common causes include Faulty Intake Air Temperature (IAT) sensor, Intake Air Temperature sensor harness is open or shorted, Intake Air Temperature sensor circuit poor electrical connection.
- 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.
Code P0111 2017 GMC Sierra Description
What are the Possible Causes of the DTC P0111 2017 GMC Sierra?
- Faulty Intake Air Temperature (IAT) sensor
- Intake Air Temperature sensor harness is open or shorted
- Intake Air Temperature sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0111 2017 GMC Sierra?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
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What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0111 2017 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0111 2017 GMC Sierra Code
What does the OBDII code P0111 mean on a 2017 GMC Sierra?
P0111 indicates an "Intake Air Temperature Circuit Range/Performance Problem," meaning the ECM detected an issue with the intake air temperature (IAT) sensor's readings being outside the expected range.
What are the symptoms of code P0111 in a 2017 GMC Sierra?
Common symptoms include poor fuel economy, rough idling, hesitation during acceleration, reduced engine performance, and an illuminated Check Engine Light.
What causes code P0111 on a 2017 GMC Sierra?
Possible causes include a faulty IAT sensor, a dirty or damaged air filter, wiring issues such as frayed or corroded connectors, or an issue with the engine control module (ECM).
Can I drive my 2017 GMC Sierra with a P0111 code?
While the truck may still be drivable, driving with this code can lead to reduced engine performance and potential long-term engine damage if left unresolved.
How do I troubleshoot a P0111 code on a 2017 GMC Sierra?
Start by checking the IAT sensor and its wiring for physical damage or corrosion. Inspect the air filter and intake system for blockages or dirt. Use a diagnostic tool to verify IAT sensor readings.
How do I fix a P0111 code on my 2017 GMC Sierra?
Repairs may include replacing the faulty IAT sensor, cleaning or replacing the air filter, repairing damaged wiring, or updating/reprogramming the ECM if needed.
Where is the IAT sensor located on a 2017 GMC Sierra?
The IAT sensor is typically located near the air intake system, often integrated into the mass airflow (MAF) sensor or mounted on the intake manifold.
How much does it cost to fix a P0111 code on a 2017 GMC Sierra?
Repair costs can range from $50 to $250 depending on whether you need to replace the IAT sensor, repair wiring, or resolve other related issues.
Can a dirty air filter cause a P0111 code on a 2017 GMC Sierra?
Yes, a dirty or clogged air filter can restrict airflow and cause inaccurate IAT sensor readings, potentially triggering the P0111 code.
How can I prevent a P0111 code from recurring on my 2017 GMC Sierra?
Regularly inspect and replace the air filter as needed, keep the intake system clean, and periodically check the condition of the IAT sensor and its wiring.
Discuss the causes and fixes for P0111 2017 GMC Sierra OBDII Code
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