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Engine-Codes – GMC – P227C 2014 GMC Sierra

P227C 2014 GMC Sierra Code - Barometric Pressure Sensor 2 Circuit Low Voltage

Quick Answer

The P227C diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a problem with the Barometric Pressure Sensor 2 Circuit registering low voltage. Common causes include Faulty barometric pressure sensor, Damaged wiring or connectors in the sensor circuit, ECM malfunction. 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
P227C 2014 GMC Sierra indicates Barometric Pressure Sensor 2 Circuit Low Voltage.
Common causes
Common causes include Faulty barometric pressure sensor, Damaged wiring or connectors in the sensor circuit, ECM malfunction.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P227C 2014 GMC Sierra Description

The P227C diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a problem with the Barometric Pressure Sensor 2 Circuit registering low voltage. The barometric pressure sensor is a crucial component of the vehicle's engine management system, responsible for measuring the atmospheric pressure and providing this data to the engine control module (ECM). This information is essential for the ECM to calculate the correct air-fuel mixture for optimal engine performance and emissions control.

OBDII Code P227C 2014 GMC Sierra - Barometric Pressure Sensor 2 Circuit Low Voltage
P227C 2014 GMC Sierra Code - Barometric Pressure Sensor 2 Circuit Low Voltage

Common Causes of P227C 2014 GMC Sierra

  1. Faulty barometric pressure sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. ECM malfunction
  4. Vacuum leaks in the intake system
  5. Incorrect sensor calibration

Symptoms of P227C 2014 GMC Sierra

  1. Reduced engine performance
  2. Poor fuel efficiency
  3. Rough idling
  4. Hesitation during acceleration
  5. Stalling

How to Fix P227C 2014 GMC Sierra

  1. Begin by performing a thorough inspection of the barometric pressure sensor, wiring, and connectors for any visible damage.
  2. Test the barometric pressure sensor using a multimeter to check for proper voltage output.
  3. If the sensor is faulty, replace it with a new OEM sensor.
  4. Check and repair any damaged wiring or connectors in the sensor circuit.
  5. Clear the DTC with a scan tool and perform a test drive to ensure the issue has been resolved.

Cost to Fix P227C 2014 GMC Sierra

The typical repair costs for addressing a P227C code on a 2014 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost of a new barometric pressure sensor can range from $50 to $150, while labor costs for diagnosis and repair can range from $100 to $300. Overall, the total repair cost for this issue could be between $150 and $450. It's important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and labor rates at the repair shop. It's recommended to consult with a qualified mechanic for a more accurate cost estimate.

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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 P227C 2014 GMC Sierra Code

1. What does the OBDII code P227C on a 2014 GMC Sierra mean?

The code P227C indicates a low voltage condition in Barometric Pressure Sensor 2 Circuit.

2. What are the common symptoms of a P227C code in a 2014 GMC Sierra?

Common symptoms include decreased engine performance, rough idling, poor fuel economy, and the illumination of the Check Engine Light.

3. What are the potential causes of the P227C code in a 2014 GMC Sierra?

Possible causes may include a faulty barometric pressure sensor, damaged wiring or connectors, a vacuum leak, or issues with the engine control module.

4. How can I diagnose the P227C code in my 2014 GMC Sierra?

Diagnosing the P227C code typically involves using an OBDII scanner to read the code, inspecting the barometric pressure sensor and its wiring, checking for vacuum leaks, and testing the sensor's voltage output.

5. Can I continue driving my 2014 GMC Sierra with a P227C code?

While it is possible to drive with a P227C code, it is not recommended as it can lead to further damage to the engine and emissions system. It is best to address the issue promptly.

6. How can I repair the P227C code in my 2014 GMC Sierra?

Repairing the P227C code may involve replacing the barometric pressure sensor, repairing or replacing damaged wiring or connectors, fixing any vacuum leaks, or reprogramming the engine control module.

7. Is it safe to reset the Check Engine Light after fixing the P227C code in my 2014 GMC Sierra?

Yes, once the issue causing the P227C code has been resolved, it is safe to reset the Check Engine Light using an OBDII scanner to clear the code.

8. How much does it cost to fix the P227C code in a 2014 GMC Sierra?

The cost of fixing a P227C code can vary depending on the specific cause of the issue, the labor rates in your area, and whether you choose to repair the vehicle yourself or take it to a mechanic.

9. Can a DIY enthusiast repair the P227C code in a 2014 GMC Sierra?

Depending on your skills and experience, you may be able to repair the P227C code yourself by following diagnostic procedures, replacing components, and clearing the code with an OBDII scanner.

10. How often does the P227C code occur in a 2014 GMC Sierra?

The occurrence of the P227C code can vary depending on the vehicle's maintenance history, driving conditions, and other factors. If the code appears, it should be addressed promptly to prevent further issues.

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