P227D 2014 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 2014 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.
Code P227D 2014 GMC Sierra 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 greater than 115 kPa (16.7 PSI) for greater than 5 s.
What are the Possible Causes of the DTC P227D 2014 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 2014 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 2014 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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Frequently Asked Questions about P227D 2014 GMC Sierra Code
What does the OBDII code P227D mean on a 2014 GMC Sierra?
P227D indicates that the Engine Control Module (ECM) has detected a high voltage issue in the Barometric Pressure Sensor 2 circuit.
What are the common symptoms of code P227D on a 2014 GMC Sierra?
Symptoms may include poor engine performance, reduced fuel efficiency, difficulty starting the engine, or the Check Engine Light turning on.
What causes the P227D code to appear?
Common causes include a faulty barometric pressure sensor, damaged or corroded wiring, loose connections, or a malfunctioning ECM.
How can I diagnose the P227D code on my GMC Sierra?
Start by inspecting the wiring and connectors for damage or corrosion. Use a multimeter to test the sensor's voltage output and compare it with manufacturer specifications.
Is it safe to drive my GMC Sierra with the P227D code?
While the vehicle may still be drivable, it can experience reduced performance and fuel efficiency. Address the issue promptly to avoid potential damage or worsening conditions.
How do I fix the P227D code on my 2014 GMC Sierra?
Repairs may involve replacing the barometric pressure sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming the ECM if necessary.
Can a dirty air filter trigger the P227D code?
No, a dirty air filter typically does not cause this code. P227D specifically relates to the barometric pressure sensor circuit.
How much does it cost to repair a P227D code on a GMC Sierra?
The cost can vary depending on the exact issue. Replacing the barometric pressure sensor typically costs $100–$300, including parts and labor.
Can a faulty ECM cause the P227D code?
Yes, although rare, a malfunctioning ECM can misinterpret sensor signals and trigger the P227D code.
What tools are needed to diagnose and repair the P227D code?
You’ll need an OBDII scanner, a digital multimeter for testing voltage, and basic tools for accessing and replacing components.
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