P2199 2014 GMC Sierra Code - Intake Air Temperature Sensor 1-2 Not Plausible
Quick Answer
The P2199 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates that the Intake Air Temperature Sensor 1-2 is not plausible. Common causes include Faulty Intake Air Temperature Sensor: The sensor itself may be malfunctioning or providing incorrect readings, Wiring or Connector Issues: Damaged or corroded wiring or connectors can disrupt the signal between the sensor and the ECM, Vacuum Leak: A leak in the intake system can introduce unmetered air, affecting the intake air temperature readings. 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
- P2199 2014 GMC Sierra indicates Intake Air Temperature Sensor 1-2 Not Plausible.
- Common causes
- Common causes include Faulty Intake Air Temperature Sensor: The sensor itself may be malfunctioning or providing incorrect readings, Wiring or Connector Issues: Damaged or corroded wiring or connectors can disrupt the signal between the sensor and the ECM, Vacuum Leak: A leak in the intake system can introduce unmetered air, affecting the intake air temperature readings.
- 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 P2199 2014 GMC Sierra Description
The P2199 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates that the Intake Air Temperature Sensor 1-2 is not plausible. This means that the Engine Control Module (ECM) has detected a discrepancy between the intake air temperature readings from two different sensors, which are typically located in the intake manifold or air intake system. The ECM uses these sensors to monitor the temperature of the incoming air, which is crucial for determining the correct air-fuel mixture for combustion in the engine.
Common Causes of P2199 2014 GMC Sierra
- Faulty Intake Air Temperature Sensor: The sensor itself may be malfunctioning or providing incorrect readings.
- Wiring or Connector Issues: Damaged or corroded wiring or connectors can disrupt the signal between the sensor and the ECM.
- Vacuum Leak: A leak in the intake system can introduce unmetered air, affecting the intake air temperature readings.
- ECM Malfunction: A problem with the Engine Control Module can also cause discrepancies in sensor readings.
- Sensor Placement: Improper placement of the sensor in the intake system can lead to inaccurate temperature readings.
Symptoms of P2199 2014 GMC Sierra
- Check Engine Light: The most common symptom associated with this code is the illumination of the Check Engine Light on the dashboard.
- Reduced Engine Performance: The vehicle may experience a decrease in power, acceleration, and overall performance.
- Poor Fuel Efficiency: Incorrect air-fuel mixture can lead to decreased fuel efficiency and increased fuel consumption.
- Rough Idle: The engine may idle roughly or inconsistently due to the incorrect air-fuel ratio.
- Emissions Issues: The vehicle may fail emissions tests due to increased emissions caused by the incorrect air-fuel mixture.
How to Fix P2199 2014 GMC Sierra
- Diagnose the Issue: Use a scan tool to retrieve the DTC and perform a visual inspection of the intake air temperature sensor and related components.
- Test the Sensor: Test the intake air temperature sensor using a multimeter to check for proper resistance and voltage readings.
- Check Wiring and Connectors: Inspect the wiring and connectors for damage, corrosion, or loose connections, and repair or replace as needed.
- Repair Vacuum Leaks: Check for vacuum leaks in the intake system and repair any leaks found to ensure accurate sensor readings.
- Replace Sensor or ECM: If the sensor is faulty or the ECM is malfunctioning, replace the sensor or ECM as necessary to resolve the issue.
Cost to Fix P2199 2014 GMC Sierra
The typical repair costs for addressing a P2199 code on a 2014 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing the intake air temperature sensor can cost between $50 and $200, while repairing wiring or connectors may range from $100 to $300. If the ECM needs to be replaced, the cost can be higher, potentially ranging from $300 to $800 or more. Labor costs at auto repair shops typically range from $80 to $150 per hour, and the total repair cost can also be influenced by the location, vehicle make and model, and engine type. It's advisable to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on the specific circumstances.
Need more information about the P2199 2014 GMC Sierra code?
Need more information on how to fix the P2199 2014 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2199 2014 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P2199 2014 GMC Sierra Code
What does the OBDII code P2199 mean for a 2014 GMC Sierra?
Code P2199 indicates that the intake air temperature (IAT) sensors 1 and 2 are providing inconsistent or implausible readings to the vehicle’s engine control module (ECM).
What are the common symptoms of P2199 on a 2014 GMC Sierra?
Symptoms may include poor engine performance, reduced fuel efficiency, difficulty starting, rough idling, or the check engine light being illuminated.
What causes the P2199 code to appear?
Common causes include faulty intake air temperature sensors, wiring issues (e.g., damaged or corroded connectors), or a malfunctioning engine control module (ECM).
How do I check the intake air temperature sensors for P2199?
You can use a multimeter to test the sensors’ resistance and compare the readings with the manufacturer’s specifications. Ensure both sensors are functioning and providing consistent readings.
Can a dirty air filter cause the P2199 code?
While unlikely, a severely clogged air filter can restrict airflow and potentially affect the IAT sensors’ readings. It’s worth inspecting and replacing the air filter if necessary.
Is it safe to drive with a P2199 code?
Driving with a P2199 code is generally possible, but it can lead to poor performance and reduced fuel efficiency. Prolonged driving without repair could cause further damage to the engine or components.
How do I fix the P2199 code on my 2014 GMC Sierra?
Repairs may include replacing a faulty intake air temperature sensor, repairing damaged wiring or connectors, cleaning sensors, or, in rare cases, reprogramming or replacing the ECM.
Can a vacuum leak trigger the P2199 code?
A vacuum leak is not a direct cause of P2199 but could contribute to engine performance issues that make the IAT sensor readings seem implausible.
How much does it cost to fix the P2199 code?
Repair costs vary depending on the issue. Replacing an IAT sensor typically costs $100-$300, including parts and labor. Wiring repairs or ECM replacement may cost more.
Do I need specialized tools to diagnose P2199?
Yes, an OBDII scanner and a multimeter are essential for diagnosing the code. An advanced scanner that can read live data is particularly helpful for comparing sensor readings.
Discuss the causes and fixes for P2199 2014 GMC Sierra OBDII Code
Code P2199 2014 GMC Sierra 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.