P0111 2016 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 2016 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 2016 GMC Sierra Description
What are the Possible Causes of the DTC P0111 2016 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 2016 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 2016 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 2016 GMC Sierra Code
1. What does the OBDII code P0111 mean on a 2016 GMC Sierra?
P0111 indicates an "Intake Air Temperature (IAT) Circuit Range/Performance Problem," meaning the IAT sensor is sending readings outside the expected range.
2. What are the symptoms of code P0111 on a 2016 GMC Sierra?
Common symptoms include poor fuel efficiency, rough idling, difficulty starting, reduced engine performance, and the Check Engine Light being illuminated.
3. What causes the P0111 code on a 2016 GMC Sierra?
Possible causes include a faulty IAT sensor, damaged wiring or connectors, a dirty or clogged air filter, or issues with the engine control module (ECM).
4. How do I fix the P0111 code on my 2016 GMC Sierra?
Start by inspecting and cleaning the IAT sensor and checking the wiring and connectors for damage. Replace the IAT sensor if faulty, and ensure the air filter is clean and properly installed.
5. Can I drive my 2016 GMC Sierra with the P0111 code?
While it may be possible to drive, it’s not recommended. The code can lead to poor performance and long-term engine damage if not addressed promptly.
6. Where is the IAT sensor located on a 2016 GMC Sierra?
The IAT sensor is usually located near the air intake or within the intake manifold, depending on the engine configuration.
7. How much does it cost to fix the P0111 code on a 2016 GMC Sierra?
Repair costs vary but typically range from $50 to $200, depending on whether the IAT sensor needs replacement or if there are wiring issues.
8. Can a dirty air filter cause the P0111 code on a 2016 GMC Sierra?
Yes, a dirty or clogged air filter can restrict airflow and cause incorrect readings from the IAT sensor, triggering the P0111 code.
9. How do I diagnose the P0111 code on my 2016 GMC Sierra?
Use an OBDII scanner to confirm the code, then inspect the IAT sensor, wiring, and air filter. Test the sensor's resistance with a multimeter to ensure it’s functioning properly.
10. What happens if I ignore the P0111 code on my 2016 GMC Sierra?
Ignoring the code can lead to worsening performance, increased fuel consumption, and potential long-term engine damage. It’s best to address the issue promptly.
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