AutoCodes – GMC – P2227 GMC

P2227 GMC 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 GMC 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 11,864
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 GMC 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 GMC - Barometric Pressure Sensor Performance - AutoCodes.com
P2227 GMC Code - Barometric Pressure Sensor Performance

What are the Possible Causes of the DTC P2227 GMC?

  • 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 GMC?

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 GMC 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 GMC code?

Need more information on how to fix the P2227 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2227 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

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 GMC Code

1. What are the common symptoms of OBDII code P2227 GMC (Barometric Pressure Sensor Performance)?

- Common symptoms include rough idling, decreased fuel efficiency, and potential engine stalling.

2. What are the possible causes of OBDII code P2227 GMC?

- The code P2227 GMC can be triggered by a faulty barometric pressure sensor, wiring issues, vacuum leaks, or a problem with the engine control module.

3. How can I diagnose the cause of OBDII code P2227 GMC?

- To diagnose the issue, you can use an OBDII scanner to read and interpret the code, check the barometric pressure sensor's readings, inspect the sensor's wiring for damage, and look for any vacuum leaks in the system.

4. How can I repair OBDII code P2227 GMC?

- Repair options include replacing the barometric pressure sensor, repairing any damaged wiring, fixing vacuum leaks, or reprogramming the engine control module, depending on the root cause of the issue.

5. Can I drive my vehicle with OBDII code P2227 GMC active?

- It is not recommended to drive your vehicle with an active P2227 code, as it can lead to further engine issues and potential breakdowns.

6. Will OBDII code P2227 GMC cause my vehicle to fail an emissions test?

- Yes, an active P2227 code can cause your vehicle to fail an emissions test due to the impact it has on the engine performance and emissions control systems.

7. How much does it typically cost to repair OBDII code P2227 GMC?

- The cost of repairing OBDII code P2227 GMC can vary depending on the underlying issue, but it may range from $100 to $500, including parts and labor.

8. Can resetting the OBDII code P2227 GMC make it go away permanently?

- Resetting the code may temporarily clear the error, but if the root cause is not addressed, the code is likely to return.

9. How often does OBDII code P2227 GMC occur in GMC vehicles?

- OBDII code P2227 GMC is a relatively common code in GMC vehicles, especially in models equipped with barometric pressure sensors.

10. Is it possible to prevent OBDII code P2227 GMC from occurring in the future?

- Regular maintenance, including checking and replacing sensors at recommended intervals, can help prevent OBDII code P2227 GMC from occurring in the future.

Discuss the causes and fixes for P2227 GMC OBDII Code

  • Where is the Barometric Air Pressure sensor located on a 2015 GMC Acadia

  • The Barometric Pressure (BARO) sensor is integral to the "Multifunction Intake Air Sensor" also known as Mass Air Flow Sensor, which is attached to the air filter box.

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