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P227D 2016 Chevrolet Silverado Code - Barometric Pressure Sensor 2 Circuit High Voltage

Quick Answer

The P227D diagnostic trouble code (DTC) specifically refers to the Barometric Pressure Sensor 2 Circuit High Voltage on a 2016 Chevrolet Silverado. Common causes include Wiring Issues: Corrosion, damage, or loose connections in the wiring harness can cause high voltage in the barometric pressure sensor circuit, Sensor Failure: The sensor itself may be faulty or damaged, leading to incorrect voltage readings, ECM Malfunction: A malfunction in the engine control module can also trigger this code. 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 Chevrolet Silverado indicates Barometric Pressure Sensor 2 Circuit High Voltage.
Common causes
Common causes include Wiring Issues: Corrosion, damage, or loose connections in the wiring harness can cause high voltage in the barometric pressure sensor circuit, Sensor Failure: The sensor itself may be faulty or damaged, leading to incorrect voltage readings, ECM Malfunction: A malfunction in the engine control module can also trigger this code.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 18, 2024
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Code P227D 2016 Chevrolet Silverado Description

The P227D diagnostic trouble code (DTC) specifically refers to the Barometric Pressure Sensor 2 Circuit High Voltage on a 2016 Chevrolet Silverado. This code indicates that there is an issue with the barometric pressure sensor, which is responsible for measuring the ambient air pressure in the vehicle's intake manifold. The sensor helps the engine control module (ECM) adjust air/fuel mixture ratios and ignition timing for optimal performance and fuel efficiency. When the sensor detects a high voltage in the circuit, it can lead to incorrect readings and potentially affect the vehicle's performance.

OBDII Code P227D 2016 Chevrolet Silverado - Barometric Pressure Sensor 2 Circuit High Voltage
P227D 2016 Chevrolet Silverado Code - Barometric Pressure Sensor 2 Circuit High Voltage

Common Causes of P227D 2016 Chevrolet Silverado

  1. Wiring Issues: Corrosion, damage, or loose connections in the wiring harness can cause high voltage in the barometric pressure sensor circuit.
  2. Sensor Failure: The sensor itself may be faulty or damaged, leading to incorrect voltage readings.
  3. ECM Malfunction: A malfunction in the engine control module can also trigger this code.
  4. Vacuum Leaks: Any leaks in the intake manifold or vacuum lines can affect the sensor's readings.

Symptoms of P227D 2016 Chevrolet Silverado

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the dashboard.
  2. Decreased Fuel Efficiency: A malfunctioning barometric pressure sensor can lead to poor fuel economy as the ECM may not be able to adjust the air/fuel mixture accurately.
  3. Rough Idling: The engine may experience rough idling or stalling due to incorrect air/fuel ratios.
  4. Reduced Engine Power: The vehicle may exhibit a loss of power or acceleration due to the sensor's faulty readings.

How to Fix P227D 2016 Chevrolet Silverado

  1. Diagnostic Scan: Start by using an OBD-II scanner to retrieve the specific trouble code and identify the issue with the barometric pressure sensor.
  2. Inspect Wiring: Check the wiring harness for any signs of damage, corrosion, or loose connections. Repair or replace as necessary.
  3. Test Sensor: Test the barometric pressure sensor using a multimeter to ensure it is functioning properly. Replace if defective.
  4. Check ECM: Inspect the engine control module for any faults or errors. Reset or replace if needed.
  5. Clear Codes: After completing the repairs, clear the DTC and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P227D 2016 Chevrolet Silverado

The cost of repairing a P227D code on a 2016 Chevrolet Silverado can vary depending on the specific cause of the issue. Generally, the replacement of a barometric pressure sensor can range from $50 to $200, while labor costs may add another $80 to $150 per hour. In total, the repair could cost anywhere from $150 to $500, including parts and labor. It's recommended to consult with a trusted mechanic or dealership to get an accurate estimate based on your vehicle's condition and location.

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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 Chevrolet Silverado Code

1. What does the OBDII code P227D mean on a 2016 Chevrolet Silverado?

P227D indicates a high voltage issue in the Barometric Pressure Sensor 2 circuit, which monitors atmospheric pressure to help optimize engine performance and emissions.

2. What are the common symptoms of code P227D in a 2016 Chevrolet Silverado?

Symptoms may include poor engine performance, reduced fuel efficiency, difficulty starting, or the Check Engine Light illuminating.

3. What causes the P227D code to appear in a Chevrolet Silverado?

Common causes include a faulty Barometric Pressure Sensor, damaged wiring or connectors in the sensor circuit, or an issue with the ECM (Engine Control Module).

4. Can I drive my 2016 Chevrolet Silverado with a P227D code?

While the truck may still be drivable, it's not recommended as it could lead to reduced performance, increased emissions, and potential long-term engine damage.

5. How is the P227D code diagnosed?

A mechanic will use a scan tool to confirm the code, inspect the wiring and connectors for damage, test the Barometric Pressure Sensor, and check for proper voltage and ground signals.

6. How do I fix the P227D code on my 2016 Chevrolet Silverado?

Repairs may involve replacing the Barometric Pressure Sensor, repairing or replacing damaged wiring or connectors, or reprogramming the ECM if necessary.

7. How much does it cost to fix the P227D code in a Chevrolet Silverado?

The cost can vary, but replacing the Barometric Pressure Sensor typically ranges from $100 to $300, depending on parts and labor.

8. Can a dirty air filter cause the P227D code?

No, a dirty air filter is unlikely to cause this specific code, as it pertains to the Barometric Pressure Sensor and not airflow restrictions.

9. Will clearing the P227D code with a scan tool fix the issue?

Clearing the code may temporarily turn off the Check Engine Light, but the underlying issue must be resolved to prevent the code from returning.

10. Is the Barometric Pressure Sensor the same as the MAP sensor?

No, while both measure pressure, the Barometric Pressure Sensor monitors atmospheric pressure, whereas the MAP sensor measures pressure inside the intake manifold.

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