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Engine-Codes – Generic – P227E

P227E Code - Barometric Pressure Sensor 2 Circuit Erratic

Quick Answer

The P227E diagnostic trouble code (DTC) indicates a problem with the Barometric Pressure Sensor 2 Circuit Erratic. Common causes include Faulty Sensor: The barometric pressure sensor itself may be malfunctioning, providing incorrect readings to the ECM, Wiring Issues: Corroded or damaged wiring connected to the sensor can cause erratic readings, ECM Malfunction: A problem with the engine control module can also trigger this code. 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
P227E indicates Barometric Pressure Sensor 2 Circuit Erratic.
Common causes
Common causes include Faulty Sensor: The barometric pressure sensor itself may be malfunctioning, providing incorrect readings to the ECM, Wiring Issues: Corroded or damaged wiring connected to the sensor can cause erratic readings, ECM Malfunction: A problem with the engine control module can also trigger this code.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P227E Description

The P227E diagnostic trouble code (DTC) indicates a problem with the Barometric Pressure Sensor 2 Circuit Erratic. This sensor is responsible for measuring the atmospheric pressure outside the vehicle, which is crucial for the engine control module (ECM) to calculate the air density and adjust the air-fuel mixture accordingly. A malfunction in this sensor can lead to erratic readings, causing the ECM to incorrectly adjust the fuel mixture, potentially leading to poor engine performance, decreased fuel efficiency, and increased emissions.

OBDII Code P227E - Barometric Pressure Sensor 2 Circuit Erratic
P227E Code - Barometric Pressure Sensor 2 Circuit Erratic

Common Causes of P227E

  1. Faulty Sensor: The barometric pressure sensor itself may be malfunctioning, providing incorrect readings to the ECM.
  2. Wiring Issues: Corroded or damaged wiring connected to the sensor can cause erratic readings.
  3. ECM Malfunction: A problem with the engine control module can also trigger this code.
  4. Vacuum Leaks: Any vacuum leaks in the intake system can affect the barometric pressure readings.

Symptoms of P227E

  1. Check Engine Light: The most obvious symptom of this code is the illumination of the check engine light on the dashboard.
  2. Poor Fuel Efficiency: Erratic readings from the barometric pressure sensor can lead to incorrect fuel mixture adjustments, resulting in decreased fuel efficiency.
  3. Rough Idling: The engine may experience rough idling or irregular RPMs due to the incorrect air-fuel mixture.
  4. Engine Misfires: Incorrect air-fuel mixture can also cause engine misfires, leading to poor performance and potential damage.

How to Fix P227E

  1. Diagnostic Check: Begin by using an OBD-II scanner to read and clear the code. Perform a thorough inspection of the barometric pressure sensor and its wiring.
  2. Replace Sensor: If the sensor is faulty, replace it with a new one. Make sure to follow manufacturer guidelines for installation.
  3. Check Wiring: Inspect the wiring connected to the sensor for any damage. Repair or replace as necessary.
  4. Test ECM: If other issues are ruled out, have the ECM tested to ensure it is functioning properly.
  5. Clear Codes: After completing the repair, clear the DTC and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P227E

The cost of repairing a Barometric Pressure Sensor 2 Circuit Erratic issue can vary depending on the severity of the problem and the specific vehicle make and model. On average, the parts for a new sensor can range from $50 to $150, while labor costs could be between $100 and $200. Overall, the total repair cost could range from $150 to $350. However, it's essential to consult with a professional mechanic to get an accurate estimate based on your specific circumstances. Labor rates at auto repair shops can vary, so it's advisable to inquire about pricing in your area.

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Code P227E Information for Specific Makes

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 P227E Code

1. What are the common symptoms of OBDII code P227E (Barometric Pressure Sensor 2 Circuit Erratic)?

- Common symptoms include poor engine performance, rough idling, decreased fuel efficiency, and the illumination of the Check Engine Light.

2. What are the possible causes of OBDII code P227E?

- The code P227E can be triggered by issues with the barometric pressure sensor itself, wiring or connector problems, or issues related to the engine control module (ECM).

3. How can I diagnose the cause of OBDII code P227E?

- Diagnosing P227E typically involves checking the barometric pressure sensor's wiring and connectors for damage, testing the sensor's functionality, and inspecting the ECM for any faults.

4. What can I do to repair OBDII code P227E?

- Repairing P227E may involve replacing the faulty barometric pressure sensor, repairing damaged wiring or connectors, or reprogramming the ECM to rectify any issues.

5. Is it safe to continue driving with OBDII code P227E present?

- It is generally not recommended to continue driving with code P227E present, as it can lead to further damage to the engine and negatively impact the vehicle's performance.

6. Can a DIY enthusiast fix OBDII code P227E at home?

- DIY enthusiasts with knowledge of automotive repair may be able to address P227E by following repair guides or tutorials, but it is advisable to consult a professional mechanic for accurate diagnosis and repair.

7. Are there any preventive measures to avoid OBDII code P227E in the future?

- Regular maintenance of the vehicle, including checking and cleaning the barometric pressure sensor, can help prevent issues that may trigger code P227E.

8. How long does it typically take to repair OBDII code P227E?

- The time required to repair P227E can vary depending on the exact cause of the issue, but it may take a few hours to a full day for a skilled mechanic to diagnose and fix the problem.

9. Can resetting the Check Engine Light resolve OBDII code P227E?

- Simply resetting the Check Engine Light without addressing the underlying issue will not permanently resolve code P227E. It is crucial to diagnose and fix the root cause of the problem.

10. Will OBDII code P227E cause the vehicle to fail an emissions test?

- Yes, code P227E can cause a vehicle to fail an emissions test due to the impact on engine performance and emissions control systems. It is recommended to address the issue before undergoing an emissions test.

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