What brand O2 sensor is best?

Are aftermarket O2 sensors any good?

It's true that you may find an aftermarket oxygen sensor that's advertised as better than OEM. There's still no guarantee that it'll outperform an OEM oxygen sensor when it comes to working with your ECU and withstanding the continuous exposure to hot exhaust.

What is a better O2 sensor Bosch or Denso?

Most of the European-made vehicles work better with Bosch oxygen sensors. Denso oxygen sensors work well with Asian-made vehicles. However, this does not mean that they cannot work on other vehicles. Just make sure that they perfectly fit and are compatible with your vehicle.

Is there a difference in O2 sensors?

Physically, there's no difference between front and back O2 sensors. They function in the same way, but the vehicle's computer uses the measurements that they take for different purposes.

Which 02 sensor is the most important?

One of the most important sensors in modern cars is the oxygen sensor. Also known as the O2 sensor because O2 is the chemical formula for oxygen, the oxygen sensor monitors how much unburned oxygen is present in the exhaust as exhaust exits the engine.

5 of the most popular best Oxygen Sensors Reviews

Are Bank 1 and Bank 2 O2 sensors the same?

Bank 2 Sensor 1 is the first sensor closest to the engine. On Bank 2 means it is at the engine side with cylinders 2, 4, 6, 8, etc. Bank 2 Sensor 2 is the second sensor on the engine's exhaust pipe, usually behind the catalytic converter.

What are the 3 types of oxygen sensors?

Generally, there are three types of oxygen sensors in cars: zirconia O2 sensors, wideband 02 sensors and Titania 02 sensors. Let's take a closer look at why these sensors are important and how they work.

Should I replace upstream or downstream O2 sensor?

It is best to replace O2 sensors in pairs. For example, if you replace the downstream left sensor, you should also replace the downstream right. However, on most vehicles produced since 1996, replacing one sensor (especially the front engine monitoring sensor) will cause the ECU to set a code for the other sensors.

Can I use any oxygen sensor?

Unless the actual part number on the sensor is a direct and listed (published) catalog interchange for your year, make and model, the sensor will not work as intended. The other issue is unless the sensor is really old, it should be tested prior to condemning it.

Are Bosch and Denso the same?

Bosch owns 5 percent of Denso. Bosch, which is based near Stuttgart, makes electronics, brakes, chassis systems, motors, navigation systems and other parts. In 2009, Bosch's global sales to automakers fell 24 percent to $25.62 billion. Denso's fiscal-year sales rose 3 percent to $28.73 billion.

Are Bosch 02 sensors any good?

Our top pick is the Bosch Oxygen Sensor. This sensor will offer you a long service life that's free of contamination. It has a well-engineered design and is fast and efficient. Moreover, it's decently priced and works just as well if not better than higher-priced options.

How long do Denso oxygen sensors last?

Generally speaking, your oxygen sensor should last somewhere between 50,000 and 60,000 miles.

Are Delphi O2 sensors good?

Delphi Technologies planar oxygen sensors have the fastest activation time which is the best in the industry and twice as fast as the nearest competitor's. But wait there's more - three times more planar coverage than our closest competitor.

Do oxygen sensors have to be the same brand?

as long as they are both the correct sensor for your application they should both work fine with your car. yup... shouldnt matter as long as they are the right ones for each bank!

Are NTK O2 sensors any good?

5.0 out of 5 stars Being a mechanic for over 35yrs, you learn what ... Being a mechanic for over 35yrs, you learn what brands consistently work and last. I only use NTK oxygen sensors, they're reliable and the quality is second to none. And the same can be said for NGK spark plugs as well.

Should I disconnect battery when changing O2 sensor?

No, there is no need to disconnect the battery when replacing O2 sensors.

What happens if I unplug my downstream O2 sensor?

What happens if you unplug oxygen sensor? With the O2 sensor removed, your ECU can no longer calculate how much fuel should be injected. The ECU will fallback to its default value and always inject the same amount of fuel every time. This could cause either low performance or horrible fuel economy.

Why do my O2 sensors keep going bad?

Why do O2 sensors fail? Since the oxygen sensor is in the exhaust stream, it can become contaminated. Common sources of contamination include an excessively rich fuel mixture condition or oil blow-by in an older engine and engine coolant being burnt in the combustion chamber as a result of an engine gasket leak.

What is the difference between heated and unheated oxygen sensors?

The only difference between the two is that the three-wire sensor shares a common ground between the heater and sending circuits. Therefore, a heated oxygen sensor is more efficient than an unheated sensor.

How do I know if my upstream or downstream oxygen sensor is bad?

Who makes Walker O2 sensors?

Walker's a longtime aftermarket muffler company, products sold at NAPA, etc. It's in their "channels of distribution" to sell other exhaust equipment, hence O2 sensors. They're surely made by NTK, which is probably one of only two producers of O2 sensors in the world.

How often should you replace O2 sensors?

Since O2 sensors are so critical to your car's system, it's recommended to replace your sensors every 60,000 to 90,000 miles. There are a few signs that will help you know when it's time to take your vehicle in to have the sensor replaced.

Can a car run without O2 sensors?

Driving with a faulty O2 sensor means the computer won't be getting the correct reading of the mixture and hence it won't be able to adjust the air-fuel mixture properly. But if your engine starts and runs, and can stay running, it's drivable.

Can you swap upstream and downstream O2 sensors?

They both function the same but are different enough that they cannot be swapped. If you need assistance having this checked or repaired, a qualified pro from YourMechanic can come to your location to inspect the system and replace any O2 sensors that are faulty.