AutoCodesGMC – P227D 2015 GMC Sierra

P227D 2015 GMC Sierra Code - Barometric Pressure Sensor 2 Circuit High Voltage

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
P227D 2015 GMC Sierra indicates Barometric Pressure Sensor 2 Circuit High Voltage.
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 209
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 P227D 2015 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 is greater than 115 kPa (16.7 PSI) for greater than 5 s.
OBDII Code P227D 2015 GMC Sierra - Barometric Pressure Sensor 2 Circuit High Voltage - AutoCodes.com
P227D 2015 GMC Sierra Code - Barometric Pressure Sensor 2 Circuit High Voltage

What are the Possible Causes of the DTC P227D 2015 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 P227D 2015 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 P227D 2015 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 P227D 2015 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 P227D 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code P227D in a 2015 GMC Sierra related to the Barometric Pressure Sensor 2 Circuit High Voltage?

- Common symptoms include poor engine performance, reduced fuel efficiency, and illuminated Check Engine light.

2. What are the possible causes of OBDII code P227D in a 2015 GMC Sierra?

- Possible causes include a faulty barometric pressure sensor, wiring issues, vacuum leaks, or a problem with the engine control module.

3. How can I diagnose the issue causing OBDII code P227D in my 2015 GMC Sierra?

- Diagnosis typically involves checking the barometric pressure sensor’s readings, inspecting the sensor and its wiring for damage, and testing the vacuum system for leaks.

4. Is it safe to continue driving my 2015 GMC Sierra with OBDII code P227D triggered?

- It is not recommended to drive with this code active, as it can lead to further engine issues and potential damage if left unresolved.

5. Can I repair OBDII code P227D in my 2015 GMC Sierra myself?

- While some DIY enthusiasts may be able to address simpler causes like loose connections or a faulty sensor, complex issues may require professional assistance.

6. How much does it typically cost to repair OBDII code P227D in a 2015 GMC Sierra?

- Repair costs can vary depending on the exact cause, but expect to pay anywhere from $100 to $500 for parts and labor.

7. Will resetting the Check Engine light resolve OBDII code P227D in my 2015 GMC Sierra?

- Resetting the light may temporarily turn it off, but the underlying issue causing the code will persist until properly diagnosed and repaired.

8. How long does it take to fix OBDII code P227D in a 2015 GMC Sierra?

- The repair time can range from 30 minutes for simple fixes like sensor replacement to several hours for more complex diagnostic and repair procedures.

9. Can extreme weather conditions affect the occurrence of OBDII code P227D in a 2015 GMC Sierra?

- Yes, extreme temperature changes or driving at high altitudes can potentially impact the barometric pressure sensor and trigger this code.

10. Is OBDII code P227D a common issue in 2015 GMC Sierra vehicles?

- While not extremely common, some 2015 GMC Sierra owners have reported encountering this code related to the Barometric Pressure Sensor 2 Circuit High Voltage.

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