P227C GMC Code - Barometric Pressure Sensor 2 Circuit Low 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
- P227C GMC indicates Barometric Pressure Sensor 2 Circuit Low 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.
Code P227C GMC Description
- 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 less than 44 kPa (6.4 PSI) for greater than 5 s.
What are the Possible Causes of the DTC P227C GMC?
- 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 P227C 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 P227C 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 P227C GMC code?
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Need Help with the Code?
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Information for Specific GMC Models
- P227C 2014 GMC Sierra — Barometric Pressure Sensor 2 Circuit Low Voltage
- P227C 2015 GMC Sierra — Barometric Pressure Sensor 2 Circuit Low Voltage
- P227C 2016 GMC Sierra — Barometric Pressure Sensor 2 Circuit Low Voltage
- P227C 2017 GMC Sierra — Barometric Pressure Sensor 2 Circuit Low Voltage
- P227C 2018 GMC Sierra — Barometric Pressure Sensor 2 Circuit Low Voltage
Frequently Asked Questions about P227C GMC Code
1. What are the common symptoms of OBDII code P227C in a GMC vehicle?
Potential symptoms include reduced engine performance, rough idling, decreased fuel efficiency, and the illumination of the Check Engine Light.
2. What does the OBDII code P227C GMC indicate?
This code specifically points to an issue with the Barometric Pressure Sensor 2 Circuit registering low voltage, which can impact the engine's air-fuel mixture.
3. What are some possible causes of the Barometric Pressure Sensor 2 Circuit Low Voltage error code?
Causes may include a faulty barometric pressure sensor, damaged wiring or connectors related to the sensor, or issues with the sensor's circuit itself.
4. How can I diagnose the cause of the P227C code in my GMC vehicle?
A thorough inspection of the barometric pressure sensor, its wiring, and connectors is recommended. Additionally, checking the sensor's voltage output and comparing it to specifications can help pinpoint the issue.
5. Is it safe to continue driving with the P227C trouble code present?
It is generally not recommended to drive with this code active, as it can lead to poor engine performance and potential damage if left unresolved for an extended period.
6. Can I reset the code P227C GMC on my own?
While you can clear the code using an OBDII scanner, it is crucial to address the underlying issue causing the code to prevent it from reoccurring.
7. How much does it typically cost to repair the Barometric Pressure Sensor 2 Circuit Low Voltage issue?
The cost of repair can vary depending on the exact cause of the problem, but it may involve replacing the barometric pressure sensor or repairing damaged wiring, with an estimated cost ranging from $100 to $300 or more.
8. Are there any DIY repair tips for fixing the P227C code?
If you have experience with automotive repairs, you may attempt to replace the barometric pressure sensor yourself after confirming the exact location and ensuring proper installation.
9. Can a mechanic easily resolve the P227C error code?
A qualified mechanic should be able to diagnose and repair the Barometric Pressure Sensor 2 Circuit Low Voltage issue efficiently, ensuring that the problem is correctly addressed.
10. How can I prevent the recurrence of the P227C code in the future?
Regularly maintaining your vehicle, including inspecting sensors and wiring, can help prevent issues like the P227C code from reoccurring.
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