AutoCodes – Chevrolet – P2229 Chevrolet

P2229 Chevrolet 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 Chevrolet 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 7,057

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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 Chevrolet 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 Chevrolet - Barometric Pressure Sensor Circuit High Voltage - AutoCodes.com — P2229 Chevrolet Code - Barometric Pressure Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2229 Chevrolet?

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 Chevrolet?

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 Chevrolet 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.

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Need Help with the Code?

Get the P2229 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

P2229 2014 Chevrolet Silverado — Barometric Pressure Sensor Circuit High Voltage
P2229 2015 Chevrolet Silverado — Barometric Pressure Sensor Circuit High Voltage
P2229 2016 Chevrolet Silverado — Barometric Pressure Sensor Circuit High Voltage
P2229 2017 Chevrolet Silverado — Barometric Pressure Sensor Circuit High Voltage
P2229 2018 Chevrolet Silverado — Barometric Pressure Sensor Circuit High Voltage

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 Chevrolet Code

1. What are common symptoms of OBDII code P2229 in a Chevrolet related to the barometric pressure sensor circuit high voltage?

Symptoms may include rough idling, decreased fuel efficiency, engine stalling, and the illumination of the Check Engine Light.

2. What are the possible causes of OBDII code P2229 in a Chevrolet triggering the barometric pressure sensor circuit high voltage?

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

3. How can I diagnose OBDII code P2229 in a Chevrolet pertaining to the barometric pressure sensor circuit high voltage?

Diagnosis typically involves using an OBDII scanner to retrieve the trouble code, checking the sensor's wiring and connectors for damage, and testing the sensor's output voltage.

4. Can a dirty air filter cause OBDII code P2229 to appear in a Chevrolet due to the barometric pressure sensor circuit high voltage?

Yes, a dirty air filter can disrupt the airflow to the sensor, potentially leading to incorrect barometric pressure readings and triggering the code.

5. What steps can I take to repair OBDII code P2229 in a Chevrolet associated with the barometric pressure sensor circuit high voltage?

Repair options may include replacing the barometric pressure sensor, repairing damaged wiring or connectors, cleaning or replacing the air filter, and resetting the ECM to clear the trouble code.

6. Is it safe to continue driving a Chevrolet with OBDII code P2229 indicating a barometric pressure sensor circuit high voltage issue?

It is generally not recommended to drive the vehicle with this code present, as it can lead to poor engine performance and potential long-term damage if left unresolved.

7. How much does it typically cost to repair OBDII code P2229 in a Chevrolet caused by the barometric pressure sensor circuit high voltage?

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

8. Can I reset OBDII code P2229 in a Chevrolet related to the barometric pressure sensor circuit high voltage without fixing the underlying issue?

While you can clear the trouble code with an OBDII scanner, the Check Engine Light may reappear if the root cause is not addressed.

9. Are there any preventive maintenance measures I can take to avoid OBDII code P2229 in a Chevrolet due to the barometric pressure sensor circuit high voltage?

Regularly inspecting and replacing the air filter, ensuring proper sensor wiring connections, and following the manufacturer's maintenance schedule can help prevent this issue.

10. Can a DIY enthusiast with basic automotive knowledge repair OBDII code P2229 in a Chevrolet from the barometric pressure sensor circuit high voltage?

Depending on the exact cause, some DIY repairs such as replacing the air filter or sensor may be feasible, but more complex issues may require professional diagnosis and repair.