P0111 GMC 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 GMC 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 GMC Description
What are the Possible Causes of the DTC P0111 GMC?
- 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 GMC?
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
User Submitted Video
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0111 GMC 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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Information for Specific GMC Models
- P0111 2014 GMC Sierra — Intake Air Temperature Circuit Range/Performance Problem
- P0111 2015 GMC Sierra — Intake Air Temperature Circuit Range/Performance Problem
- P0111 2016 GMC Sierra — Intake Air Temperature Circuit Range/Performance Problem
- P0111 2017 GMC Sierra — Intake Air Temperature Circuit Range/Performance Problem
- P0111 2018 GMC Sierra — Intake Air Temperature Circuit Range/Performance Problem
Frequently Asked Questions about P0111 GMC Code
1. What are the common symptoms of OBDII code P0111 in a GMC vehicle?
- Common symptoms include poor engine performance, rough idling, decreased fuel efficiency, and potential stalling.
2. What does the OBDII code P0111 for GMC indicate?
- The code indicates an issue with the intake air temperature sensor circuit, where the sensor is reporting a reading that is outside the expected range or performance level.
3. What are some possible causes of the P0111 code in a GMC vehicle?
- Possible causes include a faulty intake air temperature sensor, damaged sensor wiring, a disconnected sensor, or a problem with the sensor's electrical connection.
4. How can I diagnose the P0111 code in my GMC vehicle?
- Diagnosing the issue involves checking the intake air temperature sensor for proper operation, inspecting the sensor wiring for damage, and ensuring the sensor is securely connected.
5. Can I drive my GMC vehicle with the P0111 code present?
- It is not recommended to drive with the P0111 code present, as it can lead to poor engine performance and potential damage if left unresolved.
6. How can I repair the intake air temperature circuit range/performance problem in my GMC?
- Repair options include replacing the faulty intake air temperature sensor, repairing damaged wiring, reconnecting a disconnected sensor, or correcting any electrical connection issues.
7. Will resetting the OBDII code P0111 in my GMC vehicle fix the issue?
- Resetting the code may temporarily clear the warning light, but if the underlying problem is not addressed, the code is likely to reappear.
8. Can a dirty air filter cause the P0111 code to trigger in a GMC vehicle?
- A dirty air filter may affect the intake air temperature, potentially leading to the P0111 code triggering, so it is advisable to check and replace the air filter if needed.
9. Is the P0111 code a serious issue in a GMC vehicle?
- While the P0111 code may not cause immediate engine failure, it can impact engine performance and fuel efficiency, so it is best to address the issue promptly.
10. How can I prevent the P0111 code from reoccurring in my GMC vehicle?
- Regular maintenance, including checking the intake air temperature sensor and its connections, can help prevent the recurrence of the P0111 code.
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