Thanks,This is how people get themselves into trouble. Pay attention to the code description. What does the description say, specifically? Does it refer to the upstream air/fuel sensor or the downstream lambda sensor? Do you know hot to tell the difference?
The two sensors are not the same. Using a non-OE sensor can break you heart and your wallet because you will be buying the part more than once when you find out the aftermarket part does not work correctly.
Everybody seems to think they can repair their own car with no prior knowledge, information or experience. Do the research beforehand to save yourself some grief. Find out how things work before they are broken. It is hard to learn on a broken car.
Bank 1 sensor 2 is the downstream sensor in the catalytic converter.Thanks,
I want to make it clear.
In smart car, there is 2 sensor,
one is upstream bank1 S1 (as pictured, no so easy)
and other is downstream bank1 S2 (in converter).
below is part for B1S2?
You suggest that I should get original part from dealer?
P/N 0045420718 $140.00