P227C 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado?
- 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 2017 Chevrolet Silverado?
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 2017 Chevrolet Silverado 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 P227C 2017 Chevrolet Silverado Code
1. What does the OBDII code P227C mean on a 2017 Chevrolet Silverado?
P227C indicates a "Barometric Pressure Sensor 2 Circuit Low Voltage," meaning the vehicle's ECM has detected an abnormally low voltage signal from the secondary barometric pressure sensor.
2. What are the symptoms of code P227C in a 2017 Chevrolet Silverado?
Common symptoms include poor engine performance, reduced fuel efficiency, difficulty starting, rough idling, and potentially an illuminated check engine light.
3. What causes the P227C code to appear on a 2017 Chevrolet Silverado?
Possible causes include a faulty barometric pressure sensor, damaged or corroded wiring, loose electrical connections, or a malfunctioning ECM.
4. Can I drive my 2017 Chevrolet Silverado with a P227C code?
While the truck may still be drivable, ignoring the P227C code can lead to reduced performance and potential long-term engine damage. It’s best to address the issue promptly.
5. How do I diagnose the P227C code on a 2017 Chevrolet Silverado?
Start by inspecting the barometric pressure sensor and its wiring for damage or corrosion. Use a multimeter to test the voltage and continuity of the sensor circuit. A scan tool can also confirm sensor readings.
6. How do I fix the P227C code on my 2017 Chevrolet Silverado?
Repairs typically involve replacing the faulty barometric pressure sensor, repairing damaged wiring or connectors, or, in rare cases, reprogramming or replacing the ECM.
7. Where is the barometric pressure sensor located on a 2017 Chevrolet Silverado?
The barometric pressure sensor is usually located near the intake manifold or integrated into the ECM. Refer to your service manual for the exact location.
8. How much does it cost to fix a P227C code on a 2017 Chevrolet Silverado?
Repair costs can vary. Replacing a barometric pressure sensor typically costs $100–$300, including parts and labor. Wiring repairs may cost less, while ECM replacement could be more expensive.
9. Can a dirty air filter cause a P227C code on a 2017 Chevrolet Silverado?
No, a dirty air filter does not directly cause a P227C code, but maintaining a clean air filter ensures optimal engine performance and may prevent other related issues.
10. Do I need to clear the P227C code after repairs?
Yes, after completing repairs, use an OBDII scanner to clear the code and verify that it doesn’t return during a test drive.
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