P0099 Chevrolet 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 Chevrolet 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 Chevrolet Description
What are the Possible Causes of the DTC P0099 Chevrolet?
- 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 Chevrolet?
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 Chevrolet 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 Chevrolet Models
- P0099 2014 Chevrolet Silverado — Intake Air Temperature Sensor 2 Circuit Intermittent
- P0099 2015 Chevrolet Silverado — Intake Air Temperature Sensor 2 Circuit Intermittent
- P0099 2016 Chevrolet Silverado — Intake Air Temperature Sensor 2 Circuit Intermittent
- P0099 2017 Chevrolet Silverado — Intake Air Temperature Sensor 2 Circuit Intermittent
- P0099 2018 Chevrolet Silverado — Intake Air Temperature Sensor 2 Circuit Intermittent
Frequently Asked Questions about P0099 Chevrolet Code
1. What are the common symptoms of OBDII code P0099 in a Chevrolet related to the Intake Air Temperature Sensor 2 Circuit Intermittent?
The common symptoms include rough idling, decreased fuel efficiency, and potential stalling of the engine.
2. What are the possible causes of OBDII code P0099 in a Chevrolet?
Possible causes include a faulty intake air temperature sensor, damaged wiring or connectors, or issues with the engine control module (ECM).
3. How can I diagnose the Intake Air Temperature Sensor 2 Circuit Intermittent issue in my Chevrolet?
You can use an OBDII scanner to retrieve the specific trouble code P0099 and then visually inspect the sensor, wiring, and connectors for any visible damage.
4. Can a dirty air filter trigger the OBDII code P0099 in a Chevrolet?
Yes, a dirty air filter can affect the intake air temperature readings and potentially trigger the P0099 code due to incorrect sensor readings.
5. Is it safe to continue driving my Chevrolet with the OBDII code P0099 related to the Intake Air Temperature Sensor 2 Circuit Intermittent?
It is not recommended to drive your vehicle with this code present, as it can lead to poor engine performance and potential damage if left unresolved.
6. What is the typical repair process for fixing OBDII code P0099 in a Chevrolet?
The repair process usually involves replacing the faulty intake air temperature sensor, repairing any damaged wiring or connectors, and clearing the trouble code from the ECM.
7. Can I fix the Intake Air Temperature Sensor 2 Circuit Intermittent issue in my Chevrolet myself?
If you have the necessary tools and automotive knowledge, you may be able to replace the sensor or repair the wiring yourself. Otherwise, it's best to seek professional help.
8. Are there any preventive measures I can take to avoid OBDII code P0099 in my Chevrolet?
Regularly inspecting and maintaining the intake air temperature sensor, air filter, and related components can help prevent issues that may trigger the P0099 trouble code.
9. How long does it typically take to repair the Intake Air Temperature Sensor 2 Circuit Intermittent problem in a Chevrolet?
The repair time can vary depending on the extent of the issue and the availability of parts, but it usually takes a few hours to complete the repair.
10. Will resetting the ECM clear the OBDII code P0099 from my Chevrolet's system?
Resetting the ECM may temporarily clear the trouble code, but if the underlying issue causing the P0099 code is not addressed, it is likely to reappear.
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