Skip to main content

Repair guides and support for the popular 3rd generation VW Jetta. Sold in Europe as the VW Vento.

14 Questions View all

I ordered O2 sensors but they were wrong.

I looked online for oxygen sensors for my 1997 Volkswagen Jetta. All resources that i researched says that there is both an upstream and a downstream o2 sensor. Well i ordered them and when i went to change them i could only find one, on the front side, or the intake of the catalytic converter. Another problem is that the plug connector is rectangular on the car and the plug on the o2 sensors that I bought are oval, and do not fit at all. I tried to look everywhere online to find an answer, but with no results at all. I Need help.

Answer this question I have this problem too

Is this a good question?

Score -1

Peter, where are you located? What engine size is your Jetta?


It is a 2.0 liter, made in Mexico. I am located in Niagara Falls, Ontario, Canada. The sensor is on the catalytic converter, but its on the upstream end of the converter. I looked on the exhaust manifold, and there is no sensor on it at all, plus there isn't even a place to put one. I looked everywhere i could to see if i could find a second plug connector that perhaps wasn't hooked up, but nothing. I have done a deal of homework on this situation but with no avail.


Add a comment

1 Answer

Most Helpful Answer

there are two, one at the base of the exhaust manifold and one in the back of the converter, here is another picture with all the sensors. Of course the reasons why the connectors don't fit may be caused by having the wrong sensors.

News just copied the picture of the location of the O2 sensors from the service manual. If you have time and space, let me know and I will provide you with a copy of the manual It is 4000 pages of all you ever wanted to know about your Jetta. Anyhow, the diagram outlines the location for both O2 sensors. Figure 11 and 13 are the sensors in question.Good luck and let us know how it is going.

Block Image

Was this answer helpful?

Score 2
Add a comment

Add your answer

Peter will be eternally grateful.
View Statistics:

Past 24 Hours: 0

Past 7 Days: 1

Past 30 Days: 6

All Time: 2,075