Skip the auto shop - Our mechanics make house calls
  1. Home
  2. Articles
  3. How Long Does a Barometric Sensor Last?

How Long Does a Barometric Sensor Last?

barometric sensor

The barometric sensor (also called the barometric pressure sensor, or BAP) is one of a number of sensors on cars that have computer-controlled engines. All it does is measure atmospheric pressure, essentially the same way that a weather barometer does. Then it sends the information to your car’s computer so that it can deliver the proper air/fuel mix to the engine.

Even though you can’t really see or touch air, it does have mass. Air weighs the most at sea level, and the higher up you go, the less the air weighs. What this means, simply stated, is that a car that is being operated at sea level is going to need a different fuel/air mix than one that is being operated in the mountains. Your BAP sensor is always working to let your car know how far above sea level you are, so the computer can ensure that the air/fuel mix is correct.

The BAP is not a part that is replaced on a routine schedule – its life isn’t calculated in terms of miles, or years. It is not a part that fails frequently, but like all electronic components in your vehicle, it can be vulnerable to corrosion as well as wear and tear. Signs that your barometric sensor is failing, or has failed, include:

  • Rough idle
  • Black smoke at tailpipe
  • Check Engine Light is on

If your car is displaying the above symptoms, you should have the barometric sensor checked and/or replaced by a qualified mechanic .

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
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

P2159 OBD-II Trouble Code: Vehicle Speed Sensor B Range/Performance
Diagnostic Trouble Code (DTC): P2159 P2159 code definition Vehicle Speed Sensor B Range/Performance...
Auto Safety Tips
Driving is more than a way to get from point A to point B. Owning and driving a car can also be a highly enjoyable experience. Whether a person is driving...
P0291OBD-II Trouble Code: Cylinder 11 Injector Circuit Low
P0291 code definition When your vehicle’s PCM registers the P0291 code, it means that a voltage reading came from the fuel injector circuit – for cylinder number 11’s fuel injector –...


Related questions

Q: ECT sensor wires - 1995 Dodge Ram 1500

Hey there. It would probably be best to short the wires together. This will make the PCM (powertrain control module) believe your truck is running around 240 degrees Fahrenheit. This will lean out the fuel mixture and this is not...

Q: Car drives normal and then it's like the car is pull and shaking a little and cut off.Could it be the wires? know engine light sh

Hello. If the vehicle started shaking and then turned off then it can be caused by a number of things. It would be important for me to know if the car is running now or if it will not start...

Q: Door sensor broken

Hi. Yes, the door sensor is connected to the alarm system and will sound the alarm when activated. Have a technician inspect the electrical components as well as the anti theft system for faults before ordering the repair. This may...