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P2228 2014 GMC Sierra Code - Barometric Pressure Sensor Circuit Low Voltage

Quick Answer

The P2228 diagnostic trouble code (DTC) in a 2014 GMC Sierra indicates that the barometric pressure sensor circuit is detecting a lower voltage than expected. Common causes include Faulty barometric pressure sensor, Damaged wiring or connectors in the sensor circuit, Malfunctioning ECM. 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
P2228 2014 GMC Sierra indicates Barometric Pressure Sensor Circuit Low Voltage.
Common causes
Common causes include Faulty barometric pressure sensor, Damaged wiring or connectors in the sensor circuit, Malfunctioning ECM.
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 Sep 16, 2024
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Code P2228 2014 GMC Sierra Description

The P2228 diagnostic trouble code (DTC) in a 2014 GMC Sierra indicates that the barometric pressure sensor circuit is detecting a lower voltage than expected. The barometric pressure sensor plays a crucial role in the vehicle's engine management system by measuring the atmospheric pressure and providing this data to the engine control module (ECM). This information is essential for calculating air density and adjusting fuel delivery and ignition timing accordingly. When the voltage from the barometric pressure sensor is too low, it can lead to incorrect fuel and ignition adjustments, resulting in poor engine performance, reduced fuel efficiency, and increased emissions.

OBDII Code P2228 2014 GMC Sierra - Barometric Pressure Sensor Circuit Low Voltage
P2228 2014 GMC Sierra Code - Barometric Pressure Sensor Circuit Low Voltage

Common Causes of P2228 2014 GMC Sierra

  1. Faulty barometric pressure sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Malfunctioning ECM
  4. Issues with the vehicle's power supply

Symptoms of P2228 2014 GMC Sierra

  1. Rough idling
  2. Stalling
  3. Hesitation during acceleration
  4. Decreased power
  5. Engine misfires

How to Fix P2228 2014 GMC Sierra

  1. Begin by conducting a thorough inspection of the barometric pressure sensor, wiring, and connectors for any visible damage or corrosion.
  2. Test the barometric pressure sensor using a multimeter to check for proper voltage output.
  3. If the sensor is faulty, replace it with a new, OEM-quality sensor.
  4. Check and repair any damaged wiring or connectors in the sensor circuit.
  5. Clear the DTC and perform a test drive to ensure that the issue has been resolved.

Cost to Fix P2228 2014 GMC Sierra

The typical repair costs for addressing a P2228 code in a 2014 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost of a new barometric pressure sensor can range from $50 to $150, while labor costs for diagnosis and repair can range from $100 to $300. Overall, the total repair cost for this issue may fall between $150 and $450. It's important to note that these estimates are rough guidelines, and actual costs may vary based on factors such as location, vehicle make and model, and the rates of the auto repair shop. It is recommended to obtain quotes from local shops for a more accurate cost estimate.

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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 P2228 2014 GMC Sierra Code

1. What does the OBDII code P2228 mean for a 2014 GMC Sierra?

P2228 indicates a "Barometric Pressure Sensor Circuit Low Voltage," meaning the sensor is detecting a voltage level outside the expected range for atmospheric pressure.

2. What are common symptoms of the P2228 code in a 2014 GMC Sierra?

Common symptoms include poor engine performance, rough idling, decreased fuel efficiency, difficulty starting the engine, and potential illumination of the check engine light.

3. What causes the P2228 code to appear in a 2014 GMC Sierra?

Causes may include a faulty barometric pressure sensor, damaged wiring or connectors, a malfunctioning powertrain control module (PCM), or an electrical short in the circuit.

4. Can a dirty air filter trigger the P2228 code?

No, a dirty air filter is unrelated to the barometric pressure sensor and is unlikely to cause the P2228 code.

5. How do I diagnose the P2228 code in my 2014 GMC Sierra?

Start by using an OBDII scanner to confirm the code, then inspect the barometric pressure sensor, wiring, and connectors for physical damage or corrosion. Test the sensor voltage and continuity with a multimeter.

6. Can I drive my 2014 GMC Sierra with the P2228 code?

While the vehicle may still run, driving with this code can lead to poor performance and potential damage to the engine or other systems over time. It’s best to address the issue promptly.

7. How do I fix the P2228 code on a 2014 GMC Sierra?

Repairs may involve replacing the barometric pressure sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming or replacing the PCM if necessary.

8. What tools are needed to fix the P2228 code?

You’ll need an OBDII scanner, a multimeter for voltage testing, and basic hand tools for replacing components and repairing wiring.

9. How much does it cost to repair the P2228 code in a 2014 GMC Sierra?

Costs vary, but replacing the barometric pressure sensor typically ranges from $100 to $300, including parts and labor. Wiring repairs or PCM replacement may cost more.

10. Can a faulty PCM cause the P2228 code to appear?

Yes, a malfunctioning PCM can misinterpret or fail to process the barometric pressure sensor's signal, leading to the P2228 code. However, this is less common than sensor or wiring issues.

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