Engine-CodesGMC – P2229 2015 GMC Sierra

P2229 2015 GMC Sierra Code - Barometric Pressure Sensor Circuit High Voltage

Quick Answer

The P2229 diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates a problem with the Barometric Pressure Sensor Circuit registering high voltage. Common causes include Faulty Barometric Pressure Sensor, Damaged wiring or connectors in the sensor circuit, ECM malfunction. 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
P2229 2015 GMC Sierra indicates Barometric Pressure Sensor Circuit High Voltage.
Common causes
Common causes include Faulty Barometric Pressure Sensor, Damaged wiring or connectors in the sensor circuit, ECM malfunction.
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.
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code P2229 2015 GMC Sierra Description

The P2229 diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates a problem with the Barometric Pressure Sensor Circuit registering high voltage. The Barometric Pressure Sensor is a crucial component of the vehicle's engine management system, responsible for measuring the atmospheric pressure and providing this data to the engine control module (ECM). The ECM uses this information to adjust fuel delivery and ignition timing, optimizing engine performance and emissions.

OBDII Code P2229 2015 GMC Sierra - Barometric Pressure Sensor Circuit High Voltage
P2229 2015 GMC Sierra Code - Barometric Pressure Sensor Circuit High Voltage

Common Causes of P2229 2015 GMC Sierra

  1. Faulty Barometric Pressure Sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. ECM malfunction
  4. Vacuum leaks in the intake system
  5. Environmental factors affecting atmospheric pressure readings

Symptoms of P2229 2015 GMC Sierra

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Hesitation during acceleration
  4. Engine misfires
  5. Check Engine Light illuminated

How to Fix P2229 2015 GMC Sierra

  1. Begin by using a diagnostic scan tool to confirm the P2229 code and identify the specific issue.
  2. Inspect the Barometric Pressure Sensor, wiring, and connectors for any visible damage or corrosion.
  3. Test the Barometric Pressure Sensor using a multimeter to check for proper voltage output.
  4. Replace the Barometric Pressure Sensor if it is found to be faulty, ensuring proper installation and calibration.
  5. Clear the DTC and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix P2229 2015 GMC Sierra

The cost of repairing a Barometric Pressure Sensor Circuit High Voltage issue can vary depending on the specific cause of the problem and the cost of parts and labor. Typically, the cost of replacing a Barometric Pressure Sensor ranges from $100 to $200, with additional costs for diagnostic testing and labor. Overall, the total repair cost for this issue could range from $150 to $400. It is advisable to consult with a trusted mechanic or auto repair shop for a more accurate estimate based on your vehicle's make and model, as well as local labor rates.

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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 P2229 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code P2229 in a 2015 GMC Sierra?

- Common symptoms include poor engine performance, reduced fuel efficiency, and the illumination of the Check Engine light.

2. What does the OBDII code P2229 for a 2015 GMC Sierra indicate?

- This code indicates a high voltage condition in the barometric pressure sensor circuit.

3. What are the possible causes of OBDII code P2229 in a 2015 GMC Sierra?

- Possible causes include a faulty barometric pressure sensor, damaged wiring or connectors in the sensor circuit, or a problem with the engine control module (ECM).

4. How can I diagnose the cause of OBDII code P2229 in my 2015 GMC Sierra?

- Diagnosing the issue involves using a scan tool to check for the code, inspecting the barometric pressure sensor and its wiring, and testing the sensor's voltage output.

5. Is it safe to continue driving my 2015 GMC Sierra with OBDII code P2229?

- It is generally not recommended to continue driving with this code present, as it can lead to further engine issues and potentially affect vehicle performance.

6. Can I reset the Check Engine light after fixing OBDII code P2229 in my 2015 GMC Sierra?

- Yes, you can reset the Check Engine light using an OBDII scan tool after fixing the underlying issue causing the P2229 code.

7. How difficult is it to replace the barometric pressure sensor in a 2015 GMC Sierra?

- Replacing the barometric pressure sensor is typically straightforward and can be done with basic tools, but it's important to ensure proper installation and calibration.

8. Are there any DIY repair tips for addressing OBDII code P2229 in a 2015 GMC Sierra?

- DIY tips include checking for loose or damaged sensor wiring, cleaning sensor connectors, and consulting the vehicle's service manual for specific repair instructions.

9. Will OBDII code P2229 affect my 2015 GMC Sierra's emissions or smog test results?

- Yes, having this code present may cause your vehicle to fail an emissions or smog test, as it indicates a potential issue with the barometric pressure sensor circuit.

10. How much can I expect to pay for professional repairs related to OBDII code P2229 in a 2015 GMC Sierra?

- The cost of professional repairs can vary depending on the specific cause of the code, but it's advisable to budget for diagnostic fees, parts replacement, and labor costs.

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