AutoCodes – GMC – P2229 2015 GMC Sierra

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

Quick Answer

The Barometric Pressure (BARO) sensor is integral to the multifunction intake air sensor and responds to changes in altitude and atmospheric conditions. Common causes include Faulty Barometric Pressure (BARO) Sensor (integrated within Mass Air Flow/Multifunction Intake Air Sensor), Barometric Pressure Sensor harness is open or shorted, Barometric Pressure 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: P2229 2015 GMC Sierra indicates Barometric Pressure Sensor Circuit High Voltage.
Common causes: Common causes include Faulty Barometric Pressure (BARO) Sensor (integrated within Mass Air Flow/Multifunction Intake Air Sensor), Barometric Pressure Sensor harness is open or shorted, Barometric Pressure 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.

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Code Popularity 577

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 21, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2229 2015 GMC Sierra Description

The Barometric Pressure (BARO) sensor is integral to the multifunction intake air sensor and responds to changes in altitude and atmospheric conditions. This gives the Engine Control Module (ECM) an indication of barometric pressure. The ECM uses this information to calculate fuel delivery. The BARO sensor provides a voltage signal to the ECM relative to the atmospheric pressure changes. The ECM monitors the BARO sensor signal for a voltage outside of the normal range. The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the BARO sensor voltage is greater than 4.5 V for greater than 4 s.

OBDII Code P2229 2015 GMC Sierra - Barometric Pressure Sensor Circuit High Voltage - AutoCodes.com — P2229 2015 GMC Sierra Code - Barometric Pressure Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2229 2015 GMC Sierra?

Faulty Barometric Pressure (BARO) Sensor (integrated within Mass Air Flow/Multifunction Intake Air Sensor)
Barometric Pressure Sensor harness is open or shorted
Barometric Pressure Sensor circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P2229 2015 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 P2229 2015 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.

Need more information about the P2229 2015 GMC Sierra code?

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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.