Kelley Blue Book


HOMEOBD-II
p2226
Advertisement

Advertisement

P2226

Barometric Pressure Sensor "A" Circuit

author image
By
KBB Service Advisor
reviewer image
Reviewed by
Gary Hardesty

What Codes Will This Page Cover?

  • P2226: Barometric Pressure Sensor “A” Circuit
  • P2227: Barometric Pressure Sensor “A” Circuit Range/Performance
  • P2228: Barometric Pressure Sensor “A” Circuit Low
  • P2229: Barometric Pressure Sensor “A” Circuit High

Who Has the Lowest Price?

Some service centers will give you an online estimate to compare. Why drive around Town!?

What Is the P2226 Code?

Symptoms
Causes
Seriousness
Can I Still Drive?
Diagnose
Difficulty of Inspecting
Get Additional Help

The P2226, P2227, P2228, and P2229 codes have to do with the Barometric Pressure Sensor, which monitors ambient pressure in an area. This sensor generally integrates into the Mass Airflow Sensor (MAF) or Powertrain Control Module (PCM) system. If the PCM cross-checks the Barometric Pressure Sensor’s reading with other air pressure readings and finds an issue or notices that the voltage isn’t within the right frame of reference, then it will set this code.

More About the P2226, P2227, P2228, and P2229 Codes

These four codes all indicate different options for the Barometric Pressure Sensor “A” Circuit. Here’s the description for each of the codes:

  • P2226: Barometric Pressure Sensor “A” Circuit
  • P2227: Barometric Pressure Sensor “A” Circuit Range/Performance
  • P2228: Barometric Pressure Sensor “A” Circuit Low
  • P2229: Barometric Pressure Sensor “A” Circuit High

This means that P2226 indicates just a general issue with the voltage, P2227 indicates that the voltage is either completely absent or is inconsistent, P2228 indicates that the voltage is too low, and P2229 indicates that the voltage is too high. All of these codes indicate issues with the “A” sensor, however, and different makes and models may set these codes at different times.

What Are the Symptoms of a P2226 Code?

There are few consistent symptoms of the P2226, P2227, P2228, and P2229 codes. The check engine light should come on once the engine recognizes that the circuit is in some way malfunctioning. Aside from this, you might notice a general lack of engine power, issues with the engine misfiring, a strong smell of fuel, and decreased fuel economy. The specific symptoms you notice will often depend on the underlying cause.

What Are Some Causes of a P2226 Code?

There are a number of potential causes for the P2226, P2227, P2228, and P2229 codes. Your Barometric Air Pressure sensor might be defective or damaged, as could the connectors to and from the sensors. Sometimes, a mechanical malfunction may cause the readings to come out strange, or you might be experiencing heat damage. In very rare cases, this might happen because of a faulty PCM, but this is uncommon.

How Serious Is the P2226 Code?

You should treat these codes with a medium amount of severity. It’s not a good idea to keep driving on them, as the issue can lead to general concerns with idling and lowered fuel efficiency, making it more expensive to drive your vehicle. As with any other problem that is causing an OBD code, you should fix the issue as soon as possible, both to maintain long-term safety and avoid excess fuel usage.

Can I Still Drive with a P2226 Code?

You should not drive long-term with active P2226, P2227, P2228, and P2229 codes. However, you should usually be able to drive your vehicle to the local repair shop with no issues. If you’re concerned about whether or not you’ll be able to drive your vehicle to a repair shop, then call and describe the problems you’ve been having. They’ll let you know whether you can drive in or whether you might want to get a tow truck instead.

How Easy Is It to Diagnose a P2226 Code?

There are a wide variety of causes that might contribute to the P2226, P2227, P2228, and P2229 codes, and, as an added layer of difficulty, it’s common for there to be more codes than just one of these within your vehicle. If you’re trying to determine the actual cause and fix it appropriately, then it’s generally best to consult an expert who will be able to understand what’s going on and help you discover a solution.

How Difficult Is It to Inspect a P2226 Code?

The inspection process, as with the diagnosis process, is often complex. These problems having to do with the fuel intake in your vehicle requires some in-depth investigation, which can be difficult by itself if you don’t have much experience with your vehicle. This is one of the reasons that most people get help from an expert when it comes to these types of issues; the P2226, P2227, P2228, and P2229 codes can be complex to look into, but an expert will have experience doing just that.

Need Additional Help with Your P2226 Code?

For most people, issues with the fuel system and air pressure system will be complex enough that they’ll want to seek professional help. If you’re one of these people, then there are many ways to discover the best solution available.

First of all, use the KBB locator to find a repair shop in your area. Chances are, there’s a repair shop incredibly close to you which can help you access the repair shop you need for the best results.

Additionally, this code doesn’t always come on by itself. The OBD-II database will give you access to all of the trouble codes that might apply to your vehicle, helping you understand what’s happening.

P2226 Q&A

Common Error Codes

P0128 - Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)

Browse All OBD-II Codes

See our OBD-II Guide Page

Get Recall Alerts

All recalls are considered serious. Stay safe. Take care of any recalls ASAP. The good news? Recall repairs are free when performed at a local dealer.

Get your Recall Report & future alerts

Where do I find my VIN?