1999 Saturn SL2 PO133 Code

DSWEETGIRL29

MEMBER
1999 SATURN SL2
4 CYL
2WD
AUTOMATIC
85,600 MILES

Hi, I just got a code scan done and it came up po133 O2 sensor CKT Slow Response (Bank 1, Sensor 1).I wanna change it myself. Is there any videos available that I will show me how to and where to locate these sensors. I want to change both. I search everywhere for videos on Saturn SL2 how to and how to locate where they are. No luck. Thanks
Dee

2 Replies

SATURNTECH9

MECHANIC
30,870 POSTS

I would just change the one Thats bad the one in the exhaust manifold the rear o2 sensor by the cat doesn't go bad very often and when they do they will set a code. So unless u just have money to burn then I would just change the bad one. If u open the hood look straight at the engine u will see the sensor screwed into the exhaust manifold. It has one wire going to it when u get the new one u will have a better idea of what it looks like. But the new one will probably look differnt but basic look.U can't miss it when u open the hood.U can use a wrench or buy a o2 sensor socket there only like 10. Let me know if ur still wanting to change the other one still and I'll help u with that. Let me know.