» View Question

Steve 1/29/2013

2007 Saturn Vue Base 6 Cyl 3.5L


What causes o2 sensor to go out? I have replaced all of them on my 2007 Saturn Vue 3.5 and bank 2 sensor 2 3x in 20k.

I replace all the sensors and bank2 sensor 2 . 3 x in 20000. I just replaced it again and the check engine light came back on and still shows the same code, p0157.
The car cars fine and gets 20 mpg - 25 mpg hiway.

2 Answers


George 1/29/2013

Try resetting the ECU.

Walker Pro

Walker Pro 5/7/2013


Unfortunately, I am not sure what might be your problem, but I have some suggestions. However, if you have coolant leaks into the combustion chamber it may cause rapid poisoning of the O2 sensors. Have you been using good quality sensors? The correct Walker sensor numbers for your vehicle are as follows:
The upstream sensors for both the front and rear will be Walker 250-25001
The downstream sensor for the front is Walker 250-24346
The downstream sensor for the rear is Walker 250-24391

If you have any further questions or concerns please contact us and we will be happy to help.

Walker Pro (www.walkerproducts.com)


Answer this question

( characters left)

Follow Question

what's this?