P0099 Buick 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 Buick 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 Buick Description
What are the Possible Causes of the DTC P0099 Buick?
- 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 Buick?
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 Buick 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 Buick Code
1. What are the common symptoms of OBDII code P0099 in a Buick related to the Intake Air Temperature Sensor 2 Circuit Intermittent?
The common symptoms include poor engine performance, reduced fuel efficiency, and potential stalling or rough idling.
2. What are the potential causes of the OBDII code P0099 in a Buick for the Intake Air Temperature Sensor 2 Circuit Intermittent?
Possible causes include a faulty intake air temperature sensor, damaged wiring or connectors, a loose connection, or a problem with the sensor circuit.
3. How can I diagnose the issue causing OBDII code P0099 on my Buick related to the Intake Air Temperature Sensor 2 Circuit Intermittent?
You can use a multimeter to test the intake air temperature sensor's resistance, check for any damaged wiring or connectors, and ensure the sensor is receiving proper voltage.
4. Can a dirty air filter cause the OBDII code P0099 to trigger in a Buick for the Intake Air Temperature Sensor 2 Circuit Intermittent?
Yes, a dirty air filter can disrupt the airflow and affect the intake air temperature readings, potentially leading to the triggering of code P0099.
5. What are the recommended repair tips for resolving OBDII code P0099 on a Buick related to the Intake Air Temperature Sensor 2 Circuit Intermittent?
Start by inspecting and cleaning the intake air temperature sensor, checking for any loose connections or damaged wiring, and replacing the sensor if necessary.
6. Is it safe to continue driving my Buick with OBDII code P0099 related to the Intake Air Temperature Sensor 2 Circuit Intermittent?
It is not recommended to drive your Buick with this issue unresolved, as it can lead to further engine problems and potentially worsen fuel efficiency.
7. How much does it typically cost to replace an intake air temperature sensor in a Buick to resolve OBDII code P0099?
The cost of replacing an intake air temperature sensor can vary depending on the model of your Buick and where you get the repair done, but it generally ranges from $50 to $200 for the part plus labor.
8. Can resetting the OBDII codes clear P0099 related to the Intake Air Temperature Sensor 2 Circuit Intermittent in a Buick?
Resetting the codes may temporarily clear the error code, but if the underlying issue is not addressed, the code is likely to reappear once the problem is detected again.
9. Are there any DIY methods to troubleshoot and potentially fix OBDII code P0099 on a Buick for the Intake Air Temperature Sensor 2 Circuit Intermittent?
DIY methods include visually inspecting the sensor and its connections, cleaning the sensor, checking the wiring for damage, and using a multimeter to test the sensor's functionality.
10. How long does it typically take to repair OBDII code P0099 related to the Intake Air Temperature Sensor 2 Circuit Intermittent in a Buick?
The repair time can vary depending on the extent of the issue and the expertise of the mechanic, but it generally takes around 1-2 hours to diagnose and replace the intake air temperature sensor.
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