Skip the auto shop - Our mechanics make house calls

Q: Check engine light is on

asked by on

The car has gone 22,000 miles so far. The dashboard is showing the check engine light on. The Automatic feature of the car reads codes. The error code popped up indicating boost pressure sensor. What is this and do I need to replace it?

A: Yes, this needs to be checked out and the b...

Yes, this needs to be checked out and the boost pressure sensor replaced if it has failed. Your engine is turbo-charged, which means an air pump, driven by exhaust pressure, may force more air into your engine to achieve more power when you need it. The boost pressure sensor monitors how much additional air pressure is being given to the engine and reports this to engine management. Engine management limits how much pressure the engine gets to avoid engine damage from over-heating after extended high-pressure use as one case. A bad sensor could cause damage to the engine, or cause the engine to go into "Limp" mode, where power is severely limited. If you would like to have this checked, a qualified professional from YourMechanic can come to your car’s location to diagnose and address the Check Engine Light.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Changing Transmission. Do I have to replace ball body module? - 2007 Mercedes Benz S550

Assuming you are talking about the valve body control module, the answer is typically yes. However, it depends on the situation and what specifically is wrong with your transmission. The Mercedes transmission in this generation is a very solid transmission...

Q: Apple Play

While this is something we at Your Mechanic may not get involved with, I did a little research. I have a 2015 Hyundai Sonata Sport 2.0T Limited. It came with Android Auto already installed while the 2016 models have both...

Q: how much would it be to fix my evap on my vw jetta s

Hi there. There are several components that comprise the EVAP system, so in order to give you an estimate, we'll have to gather additional information from you. Please submit a request for service and we'll be able to determine what...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.