My Sub is running great but the evil check engine light popped on, my scanner shows two PO133 codes.One is just PO133 but the second one has two tiny p'* after it one being upside down.
All input appreciated.
Phil

https://charm.li/Chevy%20Truck/2002/...0Charts/P0133/

I have all those codes came wit my scanner, both codes are Ox sensors but none says anything about the two small p'*

At 22 years old, it'* probably due for oxygen sensors. I'd replace those and see if the codes go away.