Maintenance Tips, Tricks And Hacks For Your Vehicle

P2227 OBD-II Barometric Pressure Circuit Range/Performance Trouble Code




P2227 is a DTC (diagnostic trouble code) that stands for “Barometric Pressure Circuit Range/Performance” and is triggered when the vehicle’s computer detects an issue with the Barometric (BARO) sensor.

This can happen for different reasons and you need to diagnose the specific cause for this code to be triggered in your situation.

In this article, I will be talking about the P2227 code, its symptoms, causes, and how to fix it.

What Does The P2227 Code Mean?

P2227 OBD-II Barometric Pressure Circuit Range Performance Trouble Code

The P2227 code is a Diagnostic Trouble Code (DTC) that indicates a problem with the Barometric (BARO) Sensor. When this code is displayed, there is a problem with the Barometer Sensor, MAF sensor, or other components.

The Barometric (BARO) sensor is one of the engine sensors responsible for calculating the driving area’s atmospheric pressure.

It usually helps to measure the altitude of where you are driving. The ratio of air to fuel is an important part of combustion.

Higher altitudes mean that there is less oxygen for the engine to use when it takes in air and burns it.

The BAPO sensor finds out how much pressure is outside the engine by using a diaphragm that opens and closes in response to changes in the air pressure. The movement is then turned into a pulse or trigger for an electronic device.

The Engine Control Unit then gets that electrical pulse (ECU). With this information, the ECU can figure out the best fuel condition for good engine performance.

Also, the BAPO sensors are much more likely to get damaged because of their location. It can be seen on the firewall or in the fender skirt. In some cars, the MAP sensor is in the intake manifold of the engine.

When the BAPO sensor fails, the ECU cannot identify the correct amount of gasoline to inject into the combustion system of the engine.

During diagnosis, the P2227 will be set off if the voltage sent to the sensor’s ECU is too high or too low.

(See also: P0300 OBD-II Random/Multiple Cylinder Misfire Detected Trouble Code)

Which Models Are Affected By The P2227 Code

MakeAffected By P2227 Code

What Are The Possible Causes of the P2227 Code?

The P2227 trouble code is caused when the vehicle’s computer detects an issue with the Barometric pressure sensor (BARO).

Several factors could trigger the P2227 trouble code. Below are all possible causes of the P2227 trouble code.

  • Defective MAF (mass air flow) sensor
  • Defective BARO sensor
  • Defective ECM (engine control unit)
  • Sticking idle air control valve
  • Short or open condition in the BARO sensor circuit
  • Clogged intake inlet debris in the airbox
  • Defective throttle position sensor (TPS)

(See also: P0171 OBD-II System Too Lean (Bank 1) Trouble Code)

What Are The Common Symptoms of The P2227 Code?

It is important to know the symptoms of a problem because that is the only way to solve it. So, here are some of the most common symptoms of the OBD Code P2227:

  • Lack of engine power or performance
  • Abnormal engine noises
  • Engine misfiring
  • Fuel smell
  • Decrease in the fuel economy
  • Decreased throttle responsiveness

Is It Safe To Drive With a P2227 Code

While some DTC codes may allow you to continue driving the car safely, you should avoid doing so if the P2227 code is present. I would classify this code as moderately severe.

This code is pretty serious because the ECM won’t be able to control the right amount of air and fuel in the engine. If the ratio of air to fuel is wrong, the engine won’t last as long and will put out a lot of harmful chemicals that cause harm to the environment.

Thus, you should consider driving the vehicle to a nearby repair shop as soon as possible to get the problem fixed.

(See also: P0456 OBD-II Evaporative Emissions System Small Leak Detected Trouble Code)

How To Diagnose The P2227 Code

If you want to easily diagnose the P2227 trouble code, you should follow the steps below:

  1. Use an OBD-II scanner to locate the P2227 code.
  2. Physically inspect BARO, MAF, and TPS sensors. These are the major sensors that can cause the P2227 code to trigger in your vehicle.
  3. Measuring the voltage with a multimeter coming from BARO, MAF, and TPS sensors.
  4. If any of these sensors are damaged, you will need to replace them immediately, and clear the code.
  5. Inspect the air box and air intake for debris
  6. Check the sensor’s wiring for disconnection or openings
  7. Also, do not forget to check the ECU, as it may be a major cause of the P2227 trouble code and other codes that may come up during diagnosis.

Most Common Mistakes When Diagnosing The P2227 Code

Here are the most common mistakes when diagnosing the P2227 code:

  • Replacing the BARO sensor without checking the MAF and TPS sensors first

How Much Does It Cost To Repair P2227 Code

MakeP2227 CodeRepair Cost
ToyotaYes$26 – $87
NissanYes$26 – $87
ChevroletYes$26 – $87
BMWYes$26 – $87
AudiYes$26 – $87
BuickYes$26 – $87
MercedesYes$26 – $87
GMCYes$26 – $87
SuzukiYes$26 – $87
TataYes$26 – $87
LexusYes$26 – $87
MazdaYes$26 – $87
MitsubishiYes$26 – $87
KiaYes$26 – $87
JeepYes$26 – $87
FiatYes$26 – $87
HondaYes$26 – $87
HyundaiYes$26 – $87
OpelYes$26 – $87
FordYes$26 – $87
FiatYes$26 – $87
PeugeotYes$26 – $87

What Repairs Can Fix The P2227 Code

After going through all of the steps to figure out what the P2227 trouble code means, you’ll have a better understanding of what’s wrong with the system. It is very important that you don’t repair anything until you know exactly what’s wrong.

Repairs that can fix the P2227 trouble code include:

  • Repair or replace the BARO sensor if it is damaged
  • Repair or replace the TPS or MAF sensor if it is damaged
  • Replace the ECM
  • Repair or replace any wiring or connections that are damaged on the ECM, BARO, TPS, or MAF.
  • Use a sensor-safe cleaner to clean the MAF, TPS, or BARO sensor.
  • Update the latest software of the ECM

How To Fix The P2227 Code

To fix the P2227 code you need to:

  • Replace the BARO sensor
  • Replace The ECM if damaged
  • Repair or replace the damaged wiring
  • Clean the BARO, TPS, and MAF if the fault is caused by dirt.
  • Update the last ECU software.

In Conclusion

The P2227 code should be taken seriously because it could cause your engine performance to significantly reduce. The code is related to the BAP sensors, but it can also be linked to the MAF or TPS sensors.

As soon as the P2227 code is diagnosed, the problem should be fixed as soon as possible.



Vide Polowenski, Senior Mechanic

The information in this article is current and up-to-date in accordance with the latest mechanic SOPs.

Please take the time to leave a comment if this article has helped you in any way, you need additional help, or you have a suggestion.

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