AutoCodes – GMC – P227D 2016 GMC Sierra

P227D 2016 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 2016 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 136
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 2016 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 2016 GMC Sierra - Barometric Pressure Sensor 2 Circuit High Voltage - AutoCodes.com
P227D 2016 GMC Sierra Code - Barometric Pressure Sensor 2 Circuit High Voltage

What are the Possible Causes of the DTC P227D 2016 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 2016 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 2016 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 2016 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 2016 GMC Sierra Code

1. What are the common symptoms of OBDII code P227D in a 2016 GMC Sierra?

- Common symptoms include illuminated Check Engine Light, reduced engine performance, and potential fuel efficiency issues.

2. What does the OBDII code P227D indicating "Barometric Pressure Sensor 2 Circuit High Voltage" mean for a 2016 GMC Sierra?

- This code suggests that there is a high voltage condition detected in the barometric pressure sensor 2 circuit.

3. What are the possible causes of OBDII code P227D in a 2016 GMC Sierra?

- Causes may include a faulty barometric pressure sensor, wiring issues in the sensor circuit, or a problem with the engine control module (ECM).

4. How can I diagnose the OBDII code P227D in my 2016 GMC Sierra?

- Diagnosing this code typically involves checking the barometric pressure sensor's wiring, sensor functionality, and related circuitry using a diagnostic scan tool.

5. Can I continue driving my 2016 GMC Sierra with OBDII code P227D present?

- It is not recommended to continue driving with this code present, as it can lead to further engine issues and potentially affect vehicle performance.

6. How can I repair OBDII code P227D in my 2016 GMC Sierra?

- Repair options may include replacing the faulty barometric pressure sensor, repairing any damaged wiring, or reprogramming the ECM to address the high voltage issue.

7. Is it possible to reset the Check Engine Light after resolving OBDII code P227D in a 2016 GMC Sierra?

- Yes, once the underlying issue causing the code is fixed, the Check Engine Light can be reset using a diagnostic scan tool.

8. How critical is it to address OBDII code P227D promptly in a 2016 GMC Sierra?

- It is important to address this code promptly to prevent potential damage to the engine and ensure optimal vehicle performance and fuel efficiency.

9. Can a DIY enthusiast fix OBDII code P227D in a 2016 GMC Sierra, or is professional assistance recommended?

- While some may be able to address this code themselves by following repair guides, professional assistance is recommended for proper diagnosis and repair.

10. How can I prevent OBDII code P227D from reoccurring in my 2016 GMC Sierra?

- Regular maintenance checks, ensuring proper sensor function, and addressing any wiring issues promptly can help prevent the recurrence of this code.

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