P0099 2015 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 2015 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 2015 GMC Sierra Description
What are the Possible Causes of the DTC P0099 2015 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 2015 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 2015 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 2015 GMC Sierra Code
1. What are the common symptoms of OBDII code P0099 in a 2015 GMC Sierra related to the Intake Air Temperature Sensor 2 Circuit Intermittent?
- Common symptoms include engine performance issues, reduced fuel efficiency, and potentially rough idling or stalling.
2. What can cause the OBDII code P0099 in a 2015 GMC Sierra?
- The code P0099 is typically triggered by a faulty intake air temperature sensor, damaged wiring or connectors, or issues with the sensor circuit.
3. How serious is OBDII code P0099 in a 2015 GMC Sierra?
- While the code itself may not cause immediate harm, ignoring it can lead to decreased engine performance and fuel efficiency over time.
4. Can I continue driving my 2015 GMC Sierra with OBDII code P0099?
- It is generally not recommended to continue driving with this code present, as it can impact engine performance and fuel efficiency.
5. How can I diagnose the Intake Air Temperature Sensor 2 Circuit Intermittent issue in my 2015 GMC Sierra?
- Diagnosing the issue involves checking the sensor, wiring, and connectors for any visible damage or signs of malfunction.
6. Is it possible to repair OBDII code P0099 in a 2015 GMC Sierra on my own?
- Depending on your skill level and access to tools, you may be able to replace the intake air temperature sensor or repair any damaged wiring yourself.
7. How much does it cost to repair OBDII code P0099 in a 2015 GMC Sierra at a mechanic?
- The cost of repairing this issue can vary depending on the labor rates and parts costs, but it typically ranges from $100 to $300.
8. Can resetting the OBDII code P0099 in a 2015 GMC Sierra make it go away permanently?
- Resetting the code may temporarily clear it, but if the underlying issue with the intake air temperature sensor or circuit is not fixed, the code will likely reappear.
9. How long does it take to repair the Intake Air Temperature Sensor 2 Circuit Intermittent issue in a 2015 GMC Sierra?
- The repair time can vary depending on the exact cause of the issue, but it typically takes a mechanic around 1-2 hours to diagnose and replace the faulty sensor.
10. Will driving my 2015 GMC Sierra with OBDII code P0099 cause further damage to the vehicle?
- Continued driving with this code can potentially lead to decreased engine performance and fuel efficiency, so it is advisable to address the issue promptly to prevent any further damage.
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