02 sensor location

Hello,

Here is a guide to help you replace the oxygen sensor once you find it from the diagrams below:

https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor

Check out the diagrams (below). Please let us know if you need anything else to get the problem fixed.

Cheers

Oxygen sensor where is it? I cannot find it oxygen sensor.

Hello, Here is the information you requested. I gave you two pictures. One with red arrows and one without. Looks like you have two sensors. Have a great day!

Hello.

One other thing.

Also, it looks like you may have some recalls on your vehicle. The dealer may fix these for free. Please contact the dealer service department, give them the VIN number of your car and have them check on these to see if they apply to you. Several seem pretty major. The fuel tank, ball joint, airbag. So for your safety you might just give them a call to make sure your vehicle is okay.

08089
06/13/2008
Campaign - Analog OnStar(R) Deactivation

07203A
02/15/2008
Campaign - Fuel Tank Inlet Check Valve Fracturing

02019
05/01/2002
Campaign - Brake Booster Inspection/Replacement

01070
11/01/2001
Campaign - ABS Electronic Control Module Replacement

06230
11/27/2007
Recall - Fuel Tank Replacement

NHTSA07V349000
08/07/2007
Recall 07V349000: Fuel Tank Replacement

06089
09/28/2006
Recall - Rear Suspension Ball Joint Separation (Canada)

04110
05/24/2005
Recall - Power Sliding Door Interior Handle Replacement

NHTSA04V597000
12/21/2004
Recall 04V597000: Power Sliding Door Interior Handle

02032
08/01/2002
Recall - Driver Air Bag Inspection/Replacement

NHTSA02V222000
08/01/2002
Recall 02V222000: Driver's Air Bag Replacement

Van LT model.
FWD
3.4L V6
65,000 miles.

Error code:
P0135 Bank 1 Sensor 1 Heater Circuit

This is an oxygen sensor that resides upstream from the catalytic converter.
I have been told that there are two O2 sensors upstream on this minivan.
The one of them that I can find resides just to the passenger side of the point where the two exhaust pipes (manifold?) come together under and just behind the engine.

If there really is another upstream sensor, where is it and which one would I replace?
(Chevrolet garage had to remove and replace the intake manifold gasket and seal at 41,500 miles)

You have one before catalytic converter [bank one] another one behind catalytic converter [ bank two]. The bank one is more expensive than bank two.