AutoCodes – GMC – P2229 2017 GMC Sierra

P2229 2017 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 2017 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 223

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 2017 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 2017 GMC Sierra - Barometric Pressure Sensor Circuit High Voltage - AutoCodes.com — P2229 2017 GMC Sierra Code - Barometric Pressure Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2229 2017 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 2017 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 2017 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 2017 GMC Sierra code?

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Need Help with the 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 2017 GMC Sierra Code

1. What are the common symptoms of the OBDII code P2229 in a 2017 GMC Sierra?

The common symptoms of P2229 include poor engine performance, reduced fuel efficiency, and the illumination of the Check Engine Light.

2. What does the OBDII code P2229 indicate in a 2017 GMC Sierra?

P2229 indicates a fault in the Barometric Pressure Sensor Circuit, particularly high voltage detected by the sensor.

3. What are the possible causes of the P2229 code in a 2017 GMC Sierra?

Common causes of P2229 include a faulty barometric pressure sensor, damaged wiring or connectors in the sensor circuit, or issues with the Engine Control Module (ECM).

4. How can I diagnose the P2229 code in my 2017 GMC Sierra?

Diagnosing the P2229 code involves using an OBDII scanner to retrieve the code, inspecting the barometric pressure sensor and its wiring for any visible damage, and testing the sensor's voltage output.

5. Is it safe to drive with the P2229 code illuminated in a 2017 GMC Sierra?

It is generally not recommended to drive with the P2229 code present, as it can lead to poor engine performance and potential further damage if left unresolved.

6. Can I reset the P2229 code in my 2017 GMC Sierra, or does it require professional repair?

While you can clear the code with an OBDII scanner, it is essential to address the underlying issue causing the P2229 code to prevent recurrence.

7. How much does it typically cost to repair the P2229 code in a 2017 GMC Sierra?

The cost of repairing the P2229 code can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

8. Are there any DIY repair tips for fixing the P2229 code in a 2017 GMC Sierra?

DIY repair tips include checking and cleaning the sensor connections, inspecting for any visible damage to the wiring, and ensuring proper sensor installation.

9. Will the P2229 code cause my 2017 GMC Sierra to fail an emissions test?

Yes, the P2229 code can cause your GMC Sierra to fail an emissions test due to its impact on the vehicle's emissions control system.

10. How long does it typically take to repair the P2229 code in a 2017 GMC Sierra?

The repair time for the P2229 code can vary depending on the exact cause and the availability of parts, but a skilled mechanic can usually address the issue within a few hours.