Engine-CodesChevrolet – P2199 2018 Chevrolet Silverado

P2199 2018 Chevrolet Silverado Code - Intake Air Temperature Sensor 1-2 Not Plausible

Quick Answer

The P2199 code on a 2018 Chevrolet Silverado indicates a problem with the Intake Air Temperature Sensor 1-2 not being plausible. Common causes include Faulty Intake Air Temperature Sensor, Damaged wiring or connectors, Vacuum leak in the intake system. 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 2018 Chevrolet Silverado indicates Intake Air Temperature Sensor 1-2 Not Plausible.
Common causes
Common causes include Faulty Intake Air Temperature Sensor, Damaged wiring or connectors, Vacuum leak in the intake system.
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.
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P2199 2018 Chevrolet Silverado Description

The P2199 code on a 2018 Chevrolet Silverado indicates a problem with the Intake Air Temperature Sensor 1-2 not being plausible. The Intake Air Temperature Sensor (IAT) is a crucial component of the vehicle's engine management system, as it measures the temperature of the air entering the engine. This information is used by the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion and performance. When the ECM detects that the data from the IAT Sensor 1-2 is not plausible, it means that there is a discrepancy or inconsistency in the temperature readings, which can lead to various issues with the engine's operation.

OBDII Code P2199 2018 Chevrolet Silverado - Intake Air Temperature Sensor 1-2 Not Plausible
P2199 2018 Chevrolet Silverado Code - Intake Air Temperature Sensor 1-2 Not Plausible

Common Causes of P2199 2018 Chevrolet Silverado

  1. Faulty Intake Air Temperature Sensor
  2. Damaged wiring or connectors
  3. Vacuum leak in the intake system
  4. ECM malfunction
  5. Environmental factors affecting sensor accuracy (e.g., heat soak)

Symptoms of P2199 2018 Chevrolet Silverado

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Hesitation during acceleration
  4. Check Engine Light illuminated
  5. Reduced engine performance

How to Fix P2199 2018 Chevrolet Silverado

  1. Diagnose the issue by using a scan tool to check for the P2199 code and monitor the IAT sensor's readings.
  2. Inspect the Intake Air Temperature Sensor and its wiring for any visible damage or signs of wear.
  3. Test the sensor's resistance and voltage output to determine if it is functioning correctly.
  4. Replace the Intake Air Temperature Sensor if it is found to be faulty, and ensure proper installation and calibration.
  5. Clear the code and perform a test drive to verify that the issue has been resolved.

Cost to Fix P2199 2018 Chevrolet Silverado

The typical repair costs for addressing a P2199 code on a 2018 Chevrolet Silverado can vary depending on the specific cause of the issue. Replacing the Intake Air Temperature Sensor itself can range from $50 to $150, while labor costs can add an additional $80 to $150 per hour. In total, the repair may cost between $150 and $300, excluding any diagnostic fees or additional parts that may be needed. It is recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate based on the vehicle's specific condition and location.

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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 P2199 2018 Chevrolet Silverado Code

1. What does the OBDII code P2199 mean for a 2018 Chevrolet Silverado?

P2199 indicates that the intake air temperature sensors 1 and 2 are providing inconsistent or implausible readings to the engine control module.

2. What are the common symptoms of P2199 in a 2018 Chevrolet Silverado?

Symptoms can include reduced engine performance, poor fuel efficiency, rough idling, difficulty starting, and the check engine light being illuminated.

3. What causes the P2199 code in a 2018 Chevrolet Silverado?

Causes may include a faulty intake air temperature sensor, damaged wiring or connectors, debris blocking the sensor, or issues with the engine control module.

4. How can I diagnose the P2199 code on my 2018 Chevrolet Silverado?

Use an OBDII scanner to confirm the code and inspect the intake air temperature sensors, wiring, and connectors for damage or debris.

5. Can driving with the P2199 code damage my 2018 Chevrolet Silverado?

Driving with this code might lead to inefficient engine performance and potential long-term damage to engine components if not addressed promptly.

6. How do I fix the P2199 code on a 2018 Chevrolet Silverado?

Repair steps include cleaning or replacing the intake air temperature sensors, repairing damaged wiring or connectors, and resetting the code with an OBDII scanner.

7. How much does it cost to repair the P2199 code on a 2018 Chevrolet Silverado?

Costs vary, but replacing an intake air temperature sensor typically ranges from $50 to $150 for parts, plus labor costs if done by a mechanic.

8. Can I fix the P2199 code myself on a Chevrolet Silverado?

Yes, if you’re comfortable working with sensors and wiring. DIY repair involves inspecting, cleaning, or replacing the intake air temperature sensors and ensuring proper connections.

9. How do intake air temperature sensors affect engine performance?

These sensors monitor air temperature entering the engine, helping the ECM adjust fuel and air mixture for optimal performance. Faulty readings can disrupt this balance.

10. Will resetting the check engine light fix the P2199 code?

Resetting the light won’t fix the underlying issue. The code will likely return unless the root cause, such as a faulty sensor or wiring issue, is repaired.

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