Deadpool88

So yeah. Car had a CEL when I bought it, ran the codes and the ONLY code that came up was PO130, changed the o2 out and cleared the code. CEL went away for about an hour and came back on. Figured it wasn't the o2 at that point and was going to start looking in other directions. Wanted to make sure it was that specific code again and sure enough it is throwing 141 and 161 now. So suddenly both my rear o2's went bad and/or an issue with either cat on both banks? Car is getting great MPG (22-23 mixed 60/40 driving), I've checked for any cracks in the exhaust and there are none. Car drives fine otherwise. Anything else I should look into before I swap those two out?

Deadpool88

buuuuuuuuuuump