Q: Is bank 2 sensor 1 upstream or downstream?

asked by on

Trying to order an o2 sensor for my Avalon . Code said bank2 sensor1 so is that downstream or ustream and is it left or right
My car has an automatic transmission.

Anytime the code reader says sensor 1, it is referring to the upstream. Anytime the code reader says sensor 2, it is referring to the downstream. If you need further assistance with your oxygen sensors, then seek out a professional, such as one from Your Mechanic, to help you.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Is bank 2 sensor 1 upstream or downstream?

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: Car vibrates and burning smell in wheel

If the brake caliper has failed, a replacement could repair the vibration issue. The most likely cause of the low speed idle is a parking brake failure, brake system issues, drive axle failure, or a bent wheel. A qualified technician,...

Q: Why does my oxygen sensor heater stay in not ready mode on my 2002 Cadillac Escalade

Hello. If you have performed the necessary driver cycles and have not lost battery voltage or reset the computer at any time then you either have a problem with the heater circuit of the sensor or the computer is failing....

Q: My 2004 Chrysler Pacifica is shaking pretty bad what could this be

Typically is a spark plug or coil pack were bad, a fault code would be stored and the check engine light would illuminate. However it is not entirely out of the realm of possibility to have a bad plug or...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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 Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...