AutoCodes – GMC – P227E 2017 GMC Sierra

P227E 2017 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 2017 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 215

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Oct 01, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P227E 2017 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 2017 GMC Sierra - Barometric Pressure Sensor 2 Circuit Erratic - AutoCodes.com — P227E 2017 GMC Sierra Code - Barometric Pressure Sensor 2 Circuit Erratic

What does this mean?

What are the Possible Causes of the DTC P227E 2017 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 2017 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 2017 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.

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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 2017 GMC Sierra Code

1. What are the common symptoms of OBDII code P227E in a 2017 GMC Sierra related to the Barometric Pressure Sensor 2 Circuit Erratic?

- Common symptoms may include poor engine performance, rough idle, decreased fuel efficiency, and the illumination of the Check Engine Light.

2. What can cause the OBDII code P227E in a 2017 GMC Sierra related to the Barometric Pressure Sensor 2 Circuit Erratic?

- Possible causes include a faulty barometric pressure sensor, damaged wiring or connectors, vacuum leaks, or issues with the engine's air intake system.

3. How can I diagnose the OBDII code P227E in my 2017 GMC Sierra related to the Barometric Pressure Sensor 2 Circuit Erratic?

- Diagnosing this code typically involves using a scan tool to retrieve the specific error code, checking the barometric pressure sensor and related components for faults, and conducting tests to pinpoint the issue.

4. Is it safe to continue driving my 2017 GMC Sierra with the OBDII code P227E related to the Barometric Pressure Sensor 2 Circuit Erratic?

- It is not recommended to drive the vehicle for an extended period with this code unresolved, as it may lead to further damage and potential safety issues. It's advisable to address the issue promptly.

5. Can I repair the OBDII code P227E in my 2017 GMC Sierra related to the Barometric Pressure Sensor 2 Circuit Erratic myself?

- While some DIY enthusiasts may attempt to troubleshoot this issue, it's often best to consult a qualified mechanic or dealership for proper diagnosis and repair due to the complexity of the engine management system.

6. Are there any quick fixes or temporary solutions for the OBDII code P227E related to the Barometric Pressure Sensor 2 Circuit Erratic?

- Quick fixes like checking for loose connections, cleaning the sensor, or ensuring the air intake system is properly sealed may temporarily alleviate the issue, but a permanent solution will likely require professional repair.

7. How much does it typically cost to repair the OBDII code P227E in a 2017 GMC Sierra related to the Barometric Pressure Sensor 2 Circuit Erratic?

- Repair costs can vary depending on the exact cause of the issue, but expect to budget for diagnostic fees, parts replacement, and labor costs, which can range from a few hundred to over a thousand dollars.

8. Can resetting the OBDII system clear the P227E code related to the Barometric Pressure Sensor 2 Circuit Erratic in my 2017 GMC Sierra?

- While resetting the system may temporarily clear the code, it will likely reappear if the underlying issue is not addressed. Resetting should not be considered a permanent solution but rather a diagnostic step.

9. Will the OBDII code P227E related to the Barometric Pressure Sensor 2 Circuit Erratic cause the vehicle to fail emissions tests?

- Yes, this code can cause a vehicle to fail emissions tests due to its impact on engine performance and emissions control systems. It's important to address the issue before attempting an emissions test.

10. How long does it typically take to repair the OBDII code P227E in a 2017 GMC Sierra related to the Barometric Pressure Sensor 2 Circuit Erratic?

- The repair time can vary based on the specific cause of the issue, availability of parts, and the mechanic's workload. In general, expect the repair to take a few hours to a day to complete.