P0099 2014 Chevrolet Silverado Code - Intake Air Temperature Sensor 2 Circuit Intermittent
Quick Answer
The P0099 diagnostic trouble code (DTC) for the 2014 Chevrolet Silverado relates to the Intake Air Temperature Sensor 2 Circuit Intermittent. Common causes include Faulty Intake Air Temperature Sensor: The sensor itself may be malfunctioning, sending incorrect or intermittent signals to the ECM, Wiring Issues: Damage or corrosion to the wiring harness connected to the sensor can disrupt the signal transmission, Poor Electrical Connection: Loose or poor electrical connections at the sensor or ECM can cause intermittent signal issues. 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 2014 Chevrolet Silverado indicates Intake Air Temperature Sensor 2 Circuit Intermittent.
- Common causes
- Common causes include Faulty Intake Air Temperature Sensor: The sensor itself may be malfunctioning, sending incorrect or intermittent signals to the ECM, Wiring Issues: Damage or corrosion to the wiring harness connected to the sensor can disrupt the signal transmission, Poor Electrical Connection: Loose or poor electrical connections at the sensor or ECM can cause intermittent signal issues.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P0099 2014 Chevrolet Silverado Description
The P0099 diagnostic trouble code (DTC) for the 2014 Chevrolet Silverado relates to the Intake Air Temperature Sensor 2 Circuit Intermittent. This code indicates that there is a fault in the circuit that monitors the intake air temperature sensor, specifically sensor 2. The intake air temperature sensor is a crucial component of the vehicle's engine management system, as it helps the engine control module (ECM) determine the optimal air-fuel mixture for combustion. When this sensor malfunctions or sends intermittent signals, it can negatively impact the engine's performance, fuel efficiency, and emissions.
Common Causes of P0099 2014 Chevrolet Silverado
- Faulty Intake Air Temperature Sensor: The sensor itself may be malfunctioning, sending incorrect or intermittent signals to the ECM.
- Wiring Issues: Damage or corrosion to the wiring harness connected to the sensor can disrupt the signal transmission.
- Poor Electrical Connection: Loose or poor electrical connections at the sensor or ECM can cause intermittent signal issues.
- ECM Malfunction: A malfunctioning engine control module may not be able to properly interpret the signals from the intake air temperature sensor.
- Environmental Factors: Extreme temperatures or moisture exposure can also affect the sensor's performance and trigger the P0099 code.
Symptoms of P0099 2014 Chevrolet Silverado
- Check Engine Light: The most common symptom associated with the P0099 code is the illumination of the check engine light on the vehicle's dashboard.
- Rough Idle: A faulty intake air temperature sensor can cause the engine to idle roughly or inconsistently.
- Decreased Fuel Efficiency: Incorrect air-fuel ratios due to a malfunctioning sensor can lead to decreased fuel efficiency.
- Engine Stalling: In severe cases, the engine may stall or have difficulty starting due to the incorrect air-fuel mixture.
- Reduced Power: The vehicle may experience a loss of power or acceleration due to the sensor issue affecting engine performance.
How to Fix P0099 2014 Chevrolet Silverado
- Diagnostic Scan: Begin by using an OBD-II scanner to retrieve the specific trouble code and verify the issue with the intake air temperature sensor 2 circuit.
- Inspect Sensor and Wiring: Inspect the intake air temperature sensor and its wiring harness for any visible damage, corrosion, or loose connections.
- Replace Sensor: If the sensor is found to be faulty, replace it with a new OEM or high-quality aftermarket sensor.
- Repair Wiring: Repair or replace any damaged wiring in the sensor circuit to ensure a secure connection.
- Clear Codes and Test: After completing the repairs, clear the DTCs from the ECM memory and test drive the vehicle to verify that the issue has been resolved.
Cost to Fix P0099 2014 Chevrolet Silverado
The typical repair costs for addressing the P0099 code on a 2014 Chevrolet Silverado can vary depending on the specific cause of the issue and the labor rates in your area. However, as a rough estimate, the cost of replacing the intake air temperature sensor and addressing any wiring issues can range from $150 to $300. Additional costs for diagnostic time and labor should also be considered, with hourly rates typically ranging between $80 and $150 at most auto repair shops. It is recommended to contact local repair shops for a more precise estimate based on your vehicle's make and model.
Tech Notes for P0099 2014 Chevrolet Silverado
User Submitted Video
Need more information about the P0099 2014 Chevrolet Silverado code?
Need more information on how to fix the P0099 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0099 2014 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0099 2014 Chevrolet Silverado Code
1. What does the OBDII code P0099 mean on a 2014 Chevrolet Silverado?
P0099 indicates an intermittent issue with the Intake Air Temperature (IAT) Sensor 2 Circuit, which monitors incoming air temperature for proper engine performance.
2. What are the symptoms of code P0099 in a 2014 Chevrolet Silverado?
Common symptoms include poor fuel efficiency, sluggish acceleration, rough idle, and possible illumination of the check engine light.
3. What causes the P0099 code to appear on a 2014 Chevrolet Silverado?
Possible causes include a faulty IAT sensor, damaged wiring, loose electrical connections, or a malfunctioning engine control module (ECM).
4. How do I diagnose a P0099 code on my 2014 Chevrolet Silverado?
Inspect the IAT sensor, wiring, and connectors for damage. Use a multimeter to test sensor voltage and continuity, and check for intermittent connections.
5. Can a dirty air filter trigger the P0099 code on a 2014 Silverado?
While a dirty air filter can affect performance, it’s unlikely to directly cause the P0099 code. However, it’s good practice to ensure the filter is clean when diagnosing intake-related issues.
6. Can I drive my 2014 Chevrolet Silverado with a P0099 code?
Driving with this code is possible but not recommended, as it can lead to reduced engine performance and potential long-term damage if left unresolved.
7. How do I fix the P0099 code on a 2014 Chevrolet Silverado?
Repairs may involve replacing the IAT sensor, repairing damaged wiring or connectors, or reprogramming the ECM if necessary.
8. What tools do I need to fix a P0099 code on a 2014 Silverado?
You’ll need an OBDII scanner, a multimeter, and basic hand tools to inspect and repair the IAT sensor circuit.
9. How much does it cost to repair a P0099 code on a 2014 Chevrolet Silverado?
Repair costs vary but typically range from $50 to $200, depending on whether the IAT sensor needs replacement or wiring repairs are required.
10. Does the P0099 code affect emissions on a 2014 Chevrolet Silverado?
Yes, a faulty IAT sensor can lead to improper air-fuel mixture, which may impact emissions and cause your vehicle to fail an emissions test.
Discuss the causes and fixes for P0099 2014 Chevrolet Silverado OBDII Code
Code P0099 2014 Chevrolet Silverado comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.