P0099 2016 GMC Sierra Code - Intake Air Temperature Sensor 2 Circuit Intermittent
Quick Answer
The P0099 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a problem with the Intake Air Temperature Sensor 2 Circuit Intermittent. Common causes include Faulty sensor: The Intake Air Temperature Sensor 2 may be malfunctioning and sending incorrect signals to the ECM, Damaged wiring: The wiring connecting the sensor to the ECM may be damaged or frayed, causing intermittent connectivity issues, Poor connections: Loose or corroded connections between the sensor and the ECM can disrupt the signal transmission. 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 sensor: The Intake Air Temperature Sensor 2 may be malfunctioning and sending incorrect signals to the ECM, Damaged wiring: The wiring connecting the sensor to the ECM may be damaged or frayed, causing intermittent connectivity issues, Poor connections: Loose or corroded connections between the sensor and the ECM can disrupt the signal transmission.
- 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 P0099 2016 GMC Sierra Description
The P0099 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a problem with the Intake Air Temperature Sensor 2 Circuit Intermittent. This sensor is responsible for measuring the temperature of the air entering the engine. The information gathered by the sensor is crucial for the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion. An intermittent issue with this sensor can lead to incorrect readings being sent to the ECM, resulting in poor engine performance, reduced fuel efficiency, and potential damage to the engine over time.
Common Causes of P0099 2016 GMC Sierra
- Faulty sensor: The Intake Air Temperature Sensor 2 may be malfunctioning and sending incorrect signals to the ECM.
- Damaged wiring: The wiring connecting the sensor to the ECM may be damaged or frayed, causing intermittent connectivity issues.
- Poor connections: Loose or corroded connections between the sensor and the ECM can disrupt the signal transmission.
- Environmental factors: Exposure to extreme temperatures or contaminants can affect the sensor's performance.
- ECM issues: A malfunctioning ECM could also be the cause of the intermittent signal from the sensor.
Symptoms of P0099 2016 GMC Sierra
- Rough idling: The engine may idle erratically or inconsistently.
- Stalling: The engine may stall unexpectedly, especially at idle or low speeds.
- Hesitation during acceleration: The vehicle may hesitate or struggle to accelerate smoothly.
- Reduced fuel efficiency: The vehicle may experience decreased fuel efficiency due to incorrect air-fuel mixture ratios.
- Check Engine Light: The Check Engine Light may illuminate on the dashboard to indicate a problem with the Intake Air Temperature Sensor 2 Circuit.
How to Fix P0099 2016 GMC Sierra
- Diagnose the issue: Use a scan tool to read the DTC and perform tests to identify the root cause of the problem.
- Inspect sensor and wiring: Check the Intake Air Temperature Sensor 2 and its wiring for any visible damage or corrosion.
- Replace sensor: If the sensor is found to be faulty, replace it with a new one following manufacturer guidelines.
- Repair wiring: If the wiring is damaged, repair or replace the affected wires to ensure proper connectivity.
- Clear DTC: After completing the repair, clear the DTC from the ECM's memory using a scan tool to reset the Check Engine Light.
Cost to Fix P0099 2016 GMC Sierra
The cost of repairing the Intake Air Temperature Sensor 2 Circuit Intermittent issue on a 2016 GMC Sierra can vary depending on the specific cause of the problem and the labor rates in your area. In general, the cost of a new Intake Air Temperature Sensor 2 can range from $50 to $100, while the labor cost for diagnosis and repair can range from $100 to $300. Overall, you can expect to pay anywhere from $150 to $400 for this repair. Keep in mind that prices may differ based on location, vehicle make and model, and the shop you choose to visit. It's recommended to obtain quotes from multiple auto repair shops to find the best price for your specific situation.
Tech Notes for P0099 2016 GMC Sierra
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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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