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Summary
  • The diagnostic trouble code (DTC) P0472 indicates “Exhaust Pressure Sensor ‘A’ Circuit Low.”
  • Your vehicle’s powertrain control module (PCM) might store this code if it receives a mismatched signal from the exhaust pressure sensor.
  • Common causes of the P0472 code are a faulty exhaust pressure sensor, circuit issues, a PCM problem, and an obstructed pressure tube or port.
  • A vehicle that sets a P0472 code can show symptoms like check engine light Illumination, reduced power, and soot in the diesel particulate filter that resists burning.

Dealing with a P0472 code can be stressful if you don’t know the basics. Here’s a brief guide that will help you understand the meaning, causes, and symptoms of this OBD-II code so you can properly address it.

What Does the P0472 Code Mean?

Diagnostic trouble code (DTC) P0472 stands for “Exhaust Pressure Sensor “A” Circuit Low.” This trouble code is usually reported for engines with turbochargers. You’ll need a scan tool in order to read this code.

Your powertrain control module (PCM) might store a P0472 code if it receives a mismatched signal between the exhaust pressure sensor and the intake manifold pressure or ambient air pressure. This trouble code might have some similarities with a P0471 code. The main difference is that the P0472 code is strictly an electrical fault, while a P0471 can be the result of a mechanical or electrical fault.

obd ii scanner
Your PCM stores a P0472 code when it receives a mismatched signal between the exhaust pressure sensor and the intake manifold pressure or ambient air pressure.

The exhaust pressure sensor is an important part of your vehicle because it monitors the pressure in the exhaust manifold and sends this information to your PCM in order to operate output devices, such as the exhaust gas recirculation valve. This DTC shouldn’t be overlooked because it can result in poor performance and part failure.

Note: The definition of code P0472 might be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.

What are the Common Causes of the P0472 Code?

One or more factors can result in a P0472 code. The following are some of the possible causes of a P0472 code:

  • A faulty exhaust pressure sensor
  • Circuit issues, such as a damaged wire or poor connection
  • An issue with the PCM, such as software in need of an update
  • Obstructed pressure tube or port
driver holding the wheel
Reduced power is one of the common symptoms of the P0472 code.

What are the Common Symptoms of the P0472 Code?

Other exhaust pressure sensor codes like P0470, P0471, P0473 and P0474 might be present along with the P0472 code, so you might notice some similarities and differences when it comes to symptoms. However, if your PCM is only storing a P0472, you might notice the following symptoms in your vehicle.

How to Diagnose the P0472 Code

There are specific procedures for diagnosing a P0472 depending on your vehicle’s make and model. You’ll have to follow your vehicle’s recommended diagnostics steps to determine the root cause of its P0472 code. However, if you don’t feel too confident in your diagnostic skills, it’s best to consult a mechanic.

How to Fix the P0472 Code

Although exhaust trouble codes have similar symptoms and potential causes, the repair procedures are different for each one. You’ll have to find the underlying cause of your P0472 code to figure out the right fix. If you want to save time on research, you can try looking for technical service bulletins because they usually contain information on how to troubleshoot DTCs.

Fortunately, there’s no shortage of OBD-II resources online. You can refer to the right repair manuals or check an online repair database to get detailed information on your vehicle. These resources will come in handy when you decide to troubleshoot this code on your own.

It’s important to remember that every vehicle is unique. What may work to resolve a P0472 code in a Ford might not work for a Volkswagen. When troubleshooting and repairing diagnostic trouble codes, make sure to consult your vehicle’s repair manual. If you lack the skills needed to repair DTCs, it’s best to bring your vehicle to a mechanic.

Where to Get a New Exhaust Pressure Sensor to Fix DTC P0472

More often than not, DTC P0472 is logged when there’s something wrong with your vehicle’s exhaust pressure sensor. Failing to address it leads to reduced vehicle power and a lit check engine light. On the bright side, finding a new exhaust pressure sensor for your vehicle is easy with the help of CarParts.com.

Find the perfect exhaust pressure sensor by entering your ride’s specifications into our vehicle selector. This will narrow down our catalog to compatible ones for your car, SUV, or truck. Then, you can use the search filters to view the sensors with your preferred brand, price, and specs.

On top of that, our warehouses are strategically located all over the US. You won’t have to wait too long for any of your orders, and you can expect to receive your new sensor in as fast as two business days.

Don’t hold off on fixing DTC P0472. Get your hands on a new exhaust pressure sensor that’s built to last now!

About The Authors
Written By Automotive and Tech Writers

The CarParts.com Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. Guided by CarParts.com's thorough editorial process, our team strives to produce guides and resources DIYers and casual car owners can trust.

Reviewed By Contact Center Manager and Technical Reviewer at CarParts.com

William “Bill” Guzenski has produced hundreds of how-to videos for the automotive community. He’s an ASE Certified Master Automobile Technician, and is affiliated with the Specialty Equipment Market Association (SEMA). He loves attending race events and car shows throughout the country, as well as traveling in his 40-foot motorhome, exploring abandoned mines and ghost towns.

Any information provided on this Website is for informational purposes only and is not intended to replace consultation with a professional mechanic. The accuracy and timeliness of the information may change from the time of publication.

File Under : OBD-II Trouble Codes
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