AutoCodes – Subaru – P2229 Subaru

P2229 Subaru Code - Barometric Pressure Sensor Circuit High Voltage

Quick Answer

The Barometric pressure (BARO) sensor is built into the Engine Control Module (ECM) and monitors atmospheric pressure. Common causes include Engine Control Module (ECM) outdated or incorrect software, Faulty Engine Control Module. 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 Subaru indicates Barometric Pressure Sensor Circuit High Voltage.
Common causes: Common causes include Engine Control Module (ECM) outdated or incorrect software, Faulty Engine Control Module.
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 222

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 May 23, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2229 Subaru Description

The Barometric pressure (BARO) sensor is built into the Engine Control Module (ECM) and monitors atmospheric pressure. When the throttle valve is wide open, the Manifold Absolute Pressure (MAP) sensor output is nearly equal to the BARO sensor output. If the throttle position is beyond a value stored in the ECM that is used to detect wide-open throttle, and if the difference between the MAP sensor output and the BARO sensor output is equal to or greater than a set value, a malfunction in the BARO sensor output is detected and a Diagnostic Trouble Code (DTC) is stored.

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

What does this mean?

What are the Possible Causes of the DTC P2229 Subaru?

Engine Control Module (ECM) outdated or incorrect software
Faulty Engine Control Module

How to Fix the DTC P2229 Subaru?

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 Subaru 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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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 Subaru Code

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

- Common symptoms include rough idling, poor fuel efficiency, engine misfires, and the illumination of the Check Engine light.

2. What are some possible causes of OBDII code P2229 in a Subaru?

- 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).

3. How can I diagnose the issue causing OBDII code P2229 in my Subaru?

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

4. Can I drive my Subaru with OBDII code P2229 present?

- It is generally not recommended to drive your vehicle with this code, as it can affect engine performance and fuel efficiency. It is best to address the issue promptly.

5. What is the typical repair process for fixing OBDII code P2229 in a Subaru?

- The repair process may involve replacing the barometric pressure sensor, repairing or replacing damaged wiring or connectors, or reprogramming the ECM if necessary.

6. Are there any DIY tips for addressing OBDII code P2229 in a Subaru?

- DIY tips may include visually inspecting the sensor and its connections for any obvious damage, and ensuring that the sensor is securely connected.

7. How important is it to address OBDII code P2229 promptly in a Subaru?

- It is important to address this issue promptly to prevent potential damage to the engine and to ensure optimal performance and fuel efficiency of the vehicle.

8. Can weather conditions or altitude changes trigger OBDII code P2229 in a Subaru?

- Extreme weather conditions or significant changes in altitude can potentially trigger this code if they affect the barometric pressure readings received by the sensor.

9. Is it safe to continue driving if the Check Engine light is flashing along with code P2229 in a Subaru?

- A flashing Check Engine light indicates a more severe issue that requires immediate attention. It is not safe to continue driving in this condition.

10. How can a professional mechanic help in diagnosing and repairing OBDII code P2229 in a Subaru?

- A professional mechanic can use specialized tools and expertise to accurately diagnose the issue, perform necessary repairs, and ensure the problem is fully resolved.