Skip the auto shop - Our mechanics make house calls

Symptoms of a Bad or Failing Exhaust Pressure Control Valve

exhaust pressure control valve

Bad or Failing Exhaust Pressure Control Valve Inspection

by a top-rated mechanic at your home or office

The exhaust pressure control valve is an emissions component that is commonly found on many road going cars and trucks. It is a part of the EGR system, an emissions system that is designed to recirculate exhaust gases back into the engine, when the correct conditions are met, to reduce cylinder temperatures and reduce NOx emissions. One of the main components of the EGR system is the exhaust pressure control valve. The exhaust pressure control valve detects changes in the pressure of the exhaust gases to properly control the flow of exhaust gases through the EGR system. They are commonly found on vehicles equipped with turbo diesel engines, however they can also be found on the EGR system of gasoline engines as well. When the exhaust pressure control valve fails or has an issue, it can cause problems with the operation of the EGR system, and even affect engine performance. Usually a problem with the exhaust pressure control valve will produce a few symptoms that can alert the driver of a potential issue.

HAVE SYMPTOMS OF CAR TROUBLE?
Get an $80 diagnostic
by a top-rated mechanic at your home or office.

Get a quote · Book an Appointment · Our expert mechanics come to you.

1. Decrease in power, acceleration, and fuel efficiency

One of the first symptoms of a problem with the exhaust pressure valve is engine performance issues. If the valve becomes stuck or blocked it can affect engine performance. A faulty exhaust pressure valve may cause the vehicle to experience a reduction in power, acceleration, fuel efficiency, and in some cases even hard starting.

2. Excessive smoke or soot from exhaust

Another symptom of a potential problem with the exhaust pressure valve is excessive smoke or soot from the exhaust. For diesel engines equipped with them, the exhaust pressure valve plays an important role in the proper engine combustion. Issues with it can disturb the already delicate combustion process of diesel engines, which can cause black smoke and soot to be expelled from the exhaust pipe.

HAVE SYMPTOMS OF CAR TROUBLE?
Get your car fixed at your home or office.

Get a quote · Book an Appointment · Our expert mechanics come to you.

3. Check Engine Light comes on

An illuminated Check Engine Light is another symptom of a possible problem with the exhaust pressure valve. If the computer detects an issue with the exhaust pressure valve’s circuit, signal, or position, it will set off a Check Engine Light in order to alert the driver of a potential issue. A Check Engine Light can also be set off by a wide variety of other issues, so having the computer scanned for trouble codes is highly recommended.

Exhaust pressure valves play an important role in the operation of the EGR system and can affect engine performance and emissions when they have an issue. If you suspect that your vehicle’s exhaust pressure valve may be having an issue, have the vehicle inspected by a professional technician, such as one from YourMechanic, to determine if the car needs an exhaust pressure control valve replacement.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Still not sure about your car's issue?
Diagnose your car
What kind of issue are you experiencing?
Brakes are squeaking
Car is not starting
Car is overheating
Car is shaking (vibrating)
Fluids are leaking
Heating and A/C
Smoke or steam is coming out of the car
Warning light is on
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Buy Fuel Treatments
Adding a fuel additive to your gas tank when you fill up is one way to clean vital engine parts of deposits, improve the performance of your engine,...
The Traveler’s Guide to Driving in Malaysia
CraigBurrows / Shutterstock.com Malaysia is a popular destination for many tourists today. The country has amazing sights and attractions that you will want to explore....


Related questions

Q: Engine stutters then check light comes on at startup

Exhaust leaks can cause the check engine light to set. If you have an exhaust leak, it should be repaired because carbon monoxide is deadly. You can have the source of the leak identified, and repaired, by requesting an exhaust...

Q: Difficulty putting gas in the tank

Yes, I can guarantee that is a venting valve because that's how it works. When you refill the car, it is supposed to open up and vent. All the air that's coming when you put the gas in the tank,...

Q: Service Inquiry and Exhaust smell in car

All of San Jose, CA and the surrounding area as well, is served. Exhaust gas can leak from the exhaust manifold, EGR system, piping, gasketed junctions, or components such as catalytic converters, resonators, and mufflers. If you desire that this...