AutoCodesChevrolet – P0099 2016 Chevrolet Silverado

P0099 2016 Chevrolet Silverado 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 Chevrolet Silverado 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.
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Code Popularity 301
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 P0099 2016 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 detects that the IAT sensor 2 signal is intermittent or has abruptly changed for longer than 5 s.
OBDII Code P0099 2016 Chevrolet Silverado - Intake Air Temperature Sensor 2 Circuit Intermittent - AutoCodes.com
P0099 2016 Chevrolet Silverado Code - Intake Air Temperature Sensor 2 Circuit Intermittent

What are the Possible Causes of the DTC P0099 2016 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 P0099 2016 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 P0099 2016 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 P0099 2016 Chevrolet Silverado code?

Need more information on how to fix the P0099 2016 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 P0099 2016 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P0099 in a 2016 Chevrolet Silverado?

The typical symptoms of code P0099 may include engine stalling, rough idling, decreased fuel efficiency, and the Check Engine light illuminated on the dashboard.

2. What does the OBDII code P0099 on a 2016 Chevrolet Silverado indicate?

Code P0099 specifically refers to a fault in the Intake Air Temperature Sensor 2 Circuit Intermittent in the vehicle.

3. What are the possible causes of OBDII code P0099 in a 2016 Chevrolet Silverado?

Potential causes of code P0099 include a faulty intake air temperature sensor, damaged wiring or connectors in the sensor circuit, or issues with the sensor’s electrical connections.

4. How can I diagnose the Intake Air Temperature Sensor 2 Circuit Intermittent issue in my 2016 Chevrolet Silverado?

To diagnose the problem, you can use an OBDII scanner to retrieve the specific fault code, visually inspect the sensor and its connections for any visible damage, and perform a continuity test on the sensor circuit.

5. Can I continue driving my 2016 Chevrolet Silverado with OBDII code P0099?

It is recommended to address the issue promptly to prevent potential engine performance problems or further damage. It is advisable to have the vehicle checked by a qualified mechanic.

6. Is it possible to repair OBDII code P0099 in a 2016 Chevrolet Silverado myself?

If you have automotive repair experience and the necessary tools, you may be able to replace the faulty intake air temperature sensor or repair damaged wiring. However, seeking professional help is recommended for accurate diagnosis and proper repair.

7. Are there any quick tips to troubleshoot OBDII code P0099 in a 2016 Chevrolet Silverado?

You can start by checking the sensor’s wiring and connections for any visible damage, ensuring they are securely connected. Resetting the code with an OBDII scanner and monitoring if it reappears can also provide valuable information.

8. Will fixing OBDII code P0099 improve my 2016 Chevrolet Silverado's performance?

Resolving code P0099 related to the Intake Air Temperature Sensor 2 Circuit Intermittent can potentially improve engine performance, fuel efficiency, and overall drivability of the vehicle.

9. How much does it cost to repair OBDII code P0099 in a 2016 Chevrolet Silverado?

The cost of repairing code P0099 can vary depending on the exact cause of the issue, labor costs in your area, and whether you choose to replace the sensor yourself or have it done by a professional mechanic.

10. Can extreme weather conditions affect the Intake Air Temperature Sensor 2 Circuit Intermittent in a 2016 Chevrolet Silverado?

Extreme temperatures can impact the sensor’s readings and performance, potentially leading to intermittent faults. It's essential to keep the sensor and its connections clean and free from debris to prevent issues.

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