AutoCodes – GMC – P227E 2014 GMC Sierra

P227E 2014 GMC Sierra Code - Barometric Pressure Sensor 2 Circuit Erratic

Quick Answer

The Barometric Pressure (BARO) Sensor 2, also referred to as the Turbocharger Inlet Air Pressure (TCIAP) sensor, is integral to the Multifunction Intake Air Sensor and is used for humidity sensor signal correction. Common causes include Faulty Multifunction Intake Air Sensor, Multifunction Intake Air Sensor harness is open or shorted, Multifunction Intake Air 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
P227E 2014 GMC Sierra indicates Barometric Pressure Sensor 2 Circuit Erratic.
Common causes
Common causes include Faulty Multifunction Intake Air Sensor, Multifunction Intake Air Sensor harness is open or shorted, Multifunction Intake Air 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.
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Code Popularity 143
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Oct 01, 2022
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Code P227E 2014 GMC Sierra Description

The Barometric Pressure (BARO) Sensor 2, also referred to as the Turbocharger Inlet Air Pressure (TCIAP) sensor, is integral to the Multifunction Intake Air Sensor and is used for humidity sensor signal correction. The sensor responds to changes in altitude and atmospheric conditions and gives the Engine Control Module (ECM) an indication of intake air pressure relative to humidity. The ECM provides a 5 V reference and signal circuits to the TCIAP which shares a low reference circuit with IAT 1 and 2. Ignition voltage and ground circuits are also supplied to the Multifunction Intake Air Sensor internal circuits for these sensors:
- Intake Air Temperature (IAT) Sensor 1
- IAT Sensor 2
- Humidity Sensor
- Mass Air Flow (MAF) Sensor
- Turbocharger Inlet Air Pressure (TCIAP) Sensor (BARO 2)
The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the BARO sensor pressure signal had an accumulated variation, over a 10 s sample period, of greater than 100 kPa (14.5 PSI).
OBDII Code P227E 2014 GMC Sierra - Barometric Pressure Sensor 2 Circuit Erratic - AutoCodes.com
P227E 2014 GMC Sierra Code - Barometric Pressure Sensor 2 Circuit Erratic

What are the Possible Causes of the DTC P227E 2014 GMC Sierra?

  • Faulty Multifunction Intake Air Sensor
  • Multifunction Intake Air Sensor harness is open or shorted
  • Multifunction Intake Air Sensor circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P227E 2014 GMC Sierra?

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P227E 2014 GMC Sierra 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.

Need more information about the P227E 2014 GMC Sierra code?

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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 P227E 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code P227E in a 2014 GMC Sierra?

- Common symptoms include poor engine performance, reduced fuel efficiency, and the illumination of the check engine light.

2. What does the OBDII code P227E for a 2014 GMC Sierra indicate about the Barometric Pressure Sensor 2 Circuit?

- The code indicates an erratic signal from the Barometric Pressure Sensor 2 Circuit.

3. What are the possible causes of the P227E code on a 2014 GMC Sierra related to the Barometric Pressure Sensor 2 Circuit?

- Causes may include a faulty barometric pressure sensor, damaged wiring or connectors, or issues with the sensor circuit.

4. How can I diagnose the P227E code on my 2014 GMC Sierra related to the Barometric Pressure Sensor 2 Circuit?

- Diagnose the code by checking the sensor's wiring and connectors for damage, testing the sensor's functionality, and ensuring there are no vacuum leaks.

5. Can a DIY enthusiast repair the OBDII code P227E on a 2014 GMC Sierra, or is professional assistance required?

- Depending on your experience and tools, you may be able to repair the issue yourself by replacing the barometric pressure sensor or fixing any wiring problems.

6. Is it safe to continue driving a 2014 GMC Sierra with the P227E code related to the Barometric Pressure Sensor 2 Circuit error?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further engine issues and potential damage.

7. How much does it typically cost to repair the OBDII code P227E on a 2014 GMC Sierra at a dealership or mechanic?

- Repair costs for the P227E code can vary but typically range from $150 to $300, depending on the exact cause and the labor involved.

8. Are there any preventive measures to avoid encountering the P227E code in a 2014 GMC Sierra related to the Barometric Pressure Sensor 2 Circuit?

- Regular maintenance checks, including inspecting sensor connections and wiring, can help prevent the occurrence of this code.

9. Can a low-quality fuel or air filter cause the OBDII code P227E to trigger on a 2014 GMC Sierra?

- While possible, low-quality fuel or air filters are less likely to cause the P227E code. It is more commonly related to issues with the barometric pressure sensor or its circuit.

10. How long does it typically take to repair the OBDII code P227E in a 2014 GMC Sierra related to the Barometric Pressure Sensor 2 Circuit?

- Repair time can vary based on the exact cause but may take anywhere from 1 to 3 hours to diagnose and fix the issue.

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