AutoCodes – Subaru – P2227 Subaru

P2227 Subaru Code - Barometric Pressure Sensor Range/Performance Problem

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 Common causes include Engine Control Module (ECM) outdated or incorrect software, Faulty Engine Control Module.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: P2227 Subaru indicates Barometric Pressure Sensor Range/Performance Problem.
Common causes: Common causes include Engine Control Module (ECM) outdated or incorrect software, Faulty Engine Control Module.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 337

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 P2227 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 P2227 Subaru - Barometric Pressure Sensor Range/Performance Problem - AutoCodes.com — P2227 Subaru Code - Barometric Pressure Sensor Range/Performance Problem

What does this mean?

What are the Possible Causes of the DTC P2227 Subaru?

Engine Control Module (ECM) outdated or incorrect software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

How to Fix the DTC P2227 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 P2227 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 P2227 Subaru Code

1. What are the common symptoms of OBDII code P2227 in a Subaru related to the barometric pressure sensor?

- Common symptoms include poor engine performance, reduced fuel efficiency, rough idling, and potential stalling.

2. What can cause the OBDII code P2227 in a Subaru?

- The code P2227 can be triggered by a faulty barometric pressure sensor, wiring issues, or a problem with the engine control module.

3. How can I diagnose the barometric pressure sensor range/performance problem in my Subaru?

- Diagnosis involves checking the sensor's wiring and connections, testing the sensor's voltage output, and verifying the sensor's readings with a scan tool.

4. Can a dirty air filter cause the OBDII code P2227 in a Subaru?

- Yes, a dirty air filter can affect barometric pressure readings and potentially trigger the P2227 code.

5. What are some repair tips for addressing the barometric pressure sensor range/performance problem in a Subaru?

- Start by inspecting the sensor and its connections for any visible damage. If needed, replace the sensor and clear the error code to see if the issue is resolved.

6. Is it safe to continue driving my Subaru with the OBDII code P2227 present?

- It is not recommended to drive your Subaru with the P2227 code active, as it can lead to further engine issues and potential damage.

7. Can extreme weather conditions impact the barometric pressure sensor in a Subaru?

- Yes, extreme weather conditions such as high altitude or severe temperature changes can affect barometric pressure readings and trigger the P2227 code.

8. Will resetting the error code resolve the barometric pressure sensor range/performance problem in my Subaru?

- Resetting the error code may temporarily clear the warning light, but it is important to identify and address the root cause of the issue to prevent it from recurring.

9. How much does it typically cost to replace a faulty barometric pressure sensor in a Subaru?

- The cost of replacing a barometric pressure sensor can vary depending on the model of your Subaru and labor costs, but it is generally an affordable repair.

10. Can a DIY enthusiast replace the barometric pressure sensor in a Subaru?

- Replacing the barometric pressure sensor can be a DIY project for those with some automotive experience and the necessary tools. However, if unsure, it is recommended to consult a professional mechanic.