Skip the auto shop - Our mechanics make house calls

How to Buy a Good Quality Oxygen Sensor

Good quality oxygen sensor

Oxygen sensors help your vehicle control both the fuel and ignition systems, making it a critical component to ensure your car is running and starting smoothly. Boost your ride’s fuel performance and improve emissions output with a properly-functioning oxygen sensor. Anytime you replace your catalytic converter, you should also consider replacing your oxygen sensor – or about every 60,000 miles.

Vehicles manufactured before 1980 do not have oxygen sensors; a component which measures the air to fuel ratio, feeding this data into the car’s onboard computer. Your gas bills could skyrocket if you don’t have an accurately-functioning oxygen sensor.

Failures are common when the incorrect oxygen sensor is installed in the wrong location. There may be as many as four oxygen sensors in your car, so be sure you’re getting the correct sensor into the right location. The variety of sensor codes and locations can make this a bit confusing unless you’re familiar with the layout.

Note: There are a variety of naming conventions for sensor banks; buying OEM parts may help alleviate confusion around this part.

The most common locations for oxygen sensors include:

  • Cylinder bank 1 is located near the engine’s cylinder 1; bank 2 is located opposite bank 1. Four cylinder engines only have 1 bank, while larger engines may have more.

  • Sensor 1 is located inside the sensor bank and is located directly upstream from the catalytic converter.

  • Sensor 2 is the downstream sensor; you can find this sensor inside the sensor bank - falling after the catalytic converter.

While sensor location is very important, finding the correct type of sensor should be very straightforward.

YourMechanic supplies top-quality oxygen sensors to our certified mobile technicians. We can also install an oxygen sensor that you've purchased. Click here to get a quote and more information on oxygen sensor replacement.

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

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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....
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...


Related questions

Q: Car turns over, but will not start

Hello there, thank you for asking about your 1995 Chrysler Intrepid. The powertrain control module (PCM) controls ignition timing by controlling the ground path to each coil. It uses signals from the crank sensor and cam sensor to determine spark...

Q: P0134

Hi there, thanks for writing in. Code P0134 relates to the oxygen sensor -- something is wrong with this part. Normally the quick fix is just replacing the O2 sensor itself, however if this does not fix it, you may...

Q: Lights come on and minivan turns off

It sounds like a bad electrical connection is causing a loss of power somewhere. It can be very challenging to catch when it occurs so intermittently. Check the basics first. Test to verify a known good battery charged to at...