AutoCodesChevrolet – P0111 2017 Chevrolet Silverado

P0111 2017 Chevrolet Silverado 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 Chevrolet Silverado 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.
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Code Popularity 573
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 16, 2022
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Code P0111 2017 Chevrolet Silverado Description

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. The signal varies with inlet air temperature in the sensor bore and is displayed by the scan tool as °C (°F). The IAT sensor 2 and the humidity sensor share the same circuit. The IAT sensor 2 signal is displayed by the scan tool as Hertz (Hz) and °C (°F). The Diagnostic Trouble Code (DTC) will be set when the ECM determines the absolute difference between the IAT sensor 1 start-up temperature and the IAT sensor 2 start-up temperature is greater than 25°C (45°F).
OBDII Code P0111 2017 Chevrolet Silverado - Intake Air Temperature Circuit Range/Performance Problem - AutoCodes.com
P0111 2017 Chevrolet Silverado Code - Intake Air Temperature Circuit Range/Performance Problem

What are the Possible Causes of the DTC P0111 2017 Chevrolet Silverado?

  • 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 Chevrolet Silverado?

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0111 2017 Chevrolet Silverado 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.

Need more information about the P0111 2017 Chevrolet Silverado code?

Need more information on how to fix the P0111 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0111 2017 Chevrolet Silverado Code

What does OBDII code P0111 mean for a 2017 Chevrolet Silverado?

P0111 indicates a problem with the Intake Air Temperature (IAT) circuit, specifically that the performance range is out of expected limits.

What symptoms might I experience if my Silverado has a P0111 code?

Common symptoms include poor fuel economy, rough idling, hesitation during acceleration, and the check engine light illuminated.

What could cause the P0111 code in my Silverado?

Potential causes include a faulty IAT sensor, damaged wiring or connectors in the IAT circuit, or issues with the engine control module (ECM).

How can I diagnose the P0111 code?

Start by checking the IAT sensor and its wiring for damage or corrosion. Use a multimeter to test the sensor's resistance and compare it to the manufacturer's specifications.

What are some common repairs for the P0111 code?

Common repairs include replacing a faulty IAT sensor, repairing damaged wiring or connectors, and reprogramming or replacing the ECM if necessary.

Will driving my Silverado with a P0111 code cause further damage?

While it may not cause immediate damage, driving with this code can lead to reduced performance and fuel efficiency, so it’s advisable to address it promptly.

Can I clear the P0111 code without fixing the problem?

Yes, you can clear the code with an OBDII scanner, but it will likely reappear if the underlying issue is not resolved.

Is the P0111 code a serious issue?

It can lead to decreased engine performance and fuel efficiency, so it should be addressed to maintain optimal vehicle operation.

Should I consult a professional mechanic for the P0111 code?

If you're not comfortable diagnosing or repairing the issue yourself, it's best to consult a professional mechanic to avoid further complications.

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