AutoCodes – GMC – P2227 2018 GMC Sierra

P2227 2018 GMC Sierra Code - Barometric Pressure Sensor Performance

Quick Answer

The Barometric Pressure (BARO) sensor is integral to the multifunction intake air sensor and responds to changes in altitude and atmospheric conditions. Common causes include Faulty Barometric Pressure (BARO) Sensor (integrated within Mass Air Flow/Multifunction Intake Air Sensor), Barometric Pressure Sensor harness is open or shorted, Barometric Pressure 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
P2227 2018 GMC Sierra indicates Barometric Pressure Sensor Performance.
Common causes
Common causes include Faulty Barometric Pressure (BARO) Sensor (integrated within Mass Air Flow/Multifunction Intake Air Sensor), Barometric Pressure Sensor harness is open or shorted, Barometric Pressure 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 296
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 21, 2022
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Code P2227 2018 GMC Sierra Description

The Barometric Pressure (BARO) sensor is integral to the multifunction intake air sensor and responds to changes in altitude and atmospheric conditions. This gives the Engine Control Module (ECM) an indication of barometric pressure. The ECM uses this information to calculate fuel delivery. The BARO sensor provides a voltage signal to the ECM relative to the atmospheric pressure changes. The ECM monitors the BARO sensor signal for a voltage outside of the normal range. The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the BARO pressure is less than 50 kPa (7.3 psi) or greater than 115 kPa (16.7 psi).
OBDII Code P2227 2018 GMC Sierra - Barometric Pressure Sensor Performance - AutoCodes.com
P2227 2018 GMC Sierra Code - Barometric Pressure Sensor Performance

What are the Possible Causes of the DTC P2227 2018 GMC Sierra?

  • Faulty Barometric Pressure (BARO) Sensor (integrated within Mass Air Flow/Multifunction Intake Air Sensor)
  • Barometric Pressure Sensor harness is open or shorted
  • Barometric Pressure Sensor circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P2227 2018 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 P2227 2018 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 P2227 2018 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 P2227 2018 GMC Sierra Code

1. What are the common symptoms of OBDII code P2227 in a 2018 GMC Sierra related to the Barometric Pressure Sensor Performance?

- Common symptoms may include poor engine performance, rough idling, reduced fuel efficiency, and in some cases, the vehicle may go into limp mode.

2. What are the possible causes of the P2227 code in a 2018 GMC Sierra?

- The code P2227 typically indicates an issue with the barometric pressure sensor or its circuit. Possible causes include a faulty sensor, damaged wiring, or a failed sensor calibration.

3. How can I diagnose the P2227 code in my 2018 GMC Sierra?

- Diagnosing the P2227 code involves using an OBDII scanner to retrieve the code and then testing the barometric pressure sensor, checking the wiring for any damage, and ensuring the sensor is properly calibrated.

4. Can a dirty air filter trigger the P2227 code in a 2018 GMC Sierra?

- Yes, a dirty air filter can affect the barometric pressure sensor readings, potentially leading to the triggering of the P2227 code. It's recommended to check and replace the air filter if necessary.

5. Are there any DIY repair tips for addressing the P2227 code in a 2018 GMC Sierra?

- DIY repair tips may include checking and cleaning the sensor connector, inspecting the sensor for any visible damage, and ensuring the sensor is securely mounted in place.

6. How crucial is it to address the P2227 code promptly in a 2018 GMC Sierra?

- It is important to address the P2227 code promptly as ignoring it can lead to further engine performance issues and potential damage. It's recommended to diagnose and repair the underlying cause as soon as possible.

7. Can a malfunctioning barometric pressure sensor impact other systems in a 2018 GMC Sierra?

- Yes, a malfunctioning barometric pressure sensor can impact other systems in the vehicle, such as the engine's air-fuel ratio control, emission control systems, and overall engine performance.

8. Is it safe to continue driving my 2018 GMC Sierra with the P2227 code present?

- While the vehicle may still be operable with the P2227 code, it is not recommended to continue driving for an extended period. It's best to address the issue promptly to prevent further complications.

9. How much does it typically cost to repair the P2227 code related to the Barometric Pressure Sensor in a 2018 GMC Sierra?

- The repair cost for the P2227 code can vary depending on the exact cause of the issue. Costs may include sensor replacement, wiring repairs, or sensor calibration, with total expenses ranging from $100 to $300 or more.

10. Can resetting the OBDII code on a 2018 GMC Sierra temporarily resolve the P2227 issue?

- Resetting the OBDII code may temporarily clear the warning light, but if the underlying issue causing the P2227 code is not addressed, the code is likely to reappear. It's crucial to diagnose and repair the root cause for a permanent solution.

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