P0099 2016 GMC Sierra Code - Intake Air Temperature Sensor 2 Circuit Intermittent
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
- P0099 2016 GMC Sierra indicates Intake Air Temperature Sensor 2 Circuit Intermittent.
- 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 P0099 2016 GMC Sierra Description
What are the Possible Causes of the DTC P0099 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 P0099 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 P0099 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 P0099 2016 GMC Sierra Code
1. What are the common symptoms of OBDII code P0099 in a 2016 GMC Sierra?
- Common symptoms include poor engine performance, reduced fuel efficiency, and potentially rough idling.
2. What does the OBDII code P0099 in a 2016 GMC Sierra indicate?
- The code P0099 indicates an issue with the Intake Air Temperature Sensor 2 Circuit Intermittent.
3. What are some possible causes of the Intake Air Temperature Sensor 2 Circuit Intermittent code in a 2016 GMC Sierra?
- Causes can include a faulty intake air temperature sensor, damaged wiring or connectors, or issues with the sensor circuit.
4. How can I diagnose the Intake Air Temperature Sensor 2 Circuit Intermittent code in my 2016 GMC Sierra?
- Diagnosis typically involves checking the sensor's wiring and connectors for damage, testing the sensor itself, and inspecting the sensor circuit for any issues.
5. Can a DIY enthusiast repair the Intake Air Temperature Sensor 2 Circuit Intermittent issue in a 2016 GMC Sierra?
- While some basic troubleshooting like checking connections can be done, it's recommended to have a professional diagnose and repair this issue due to its complexity.
6. Is it safe to continue driving my 2016 GMC Sierra with the P0099 code present?
- It's generally not recommended to drive with the P0099 code present, as it can lead to further engine issues and potentially worsen fuel efficiency.
7. How much does it typically cost to repair the Intake Air Temperature Sensor 2 Circuit Intermittent code in a 2016 GMC Sierra?
- The cost can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.
8. Can a faulty intake air temperature sensor cause other problems in a 2016 GMC Sierra?
- Yes, a faulty intake air temperature sensor can potentially cause incorrect fuel mixture, leading to poor engine performance and reduced fuel efficiency.
9. Are there any preventative measures to avoid encountering the P0099 code in a 2016 GMC Sierra?
- Regular maintenance checks, including inspecting the intake air temperature sensor and its connections, can help prevent issues that trigger the P0099 code.
10. How long does it take to repair the Intake Air Temperature Sensor 2 Circuit Intermittent issue in a 2016 GMC Sierra?
- The repair time can vary depending on the exact cause and the expertise of the technician, but it generally takes around 1 to 2 hours to diagnose and fix the problem.
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