So - massively frustrating situation with my 07 JK Sahara.

Battery cell blew right before my inspection was up and had to be replaced, as such, couldn't test emissions until I cleared a few drive cycles.


400+ miles later and it still won't test. O2 and Cat. errors. Tested the O2 sensor and Catalytic converter and both are working fine. Additionally, no leftover uncleared codes.

Basically, WTF? Anyone have any insight? Registration is now expired and I'm pretty stuck here.

 

What are the errors? Did the battery take out any of the wiring? Sadly the only way to get it to "ready" status for emissions testing is to drive it. Any time you change the programming or clear a code it's going to reset the "ready" counter. Luckily I don't have emissions testing but I do watch that screen after doing repairs.

 

 

Check all your wire harness plugs as well as your grounds. Grounds on a 07 where you are would be my bet.

 

I'm more of a body guy, the electrical stuff isn't my area of expertise - we discussed the grounds being the issue for the signal, would this throw off the Cat and O2 as well?

 

Along with driving, your Jeep also needs a couple of complete cool downs for it to finally go into ready state.

 

I just reread your post and saw where you mentioned a few drive cycles. I went through this last year right before my inspection. I took about 200 miles, over the course of several days to get it to go into ready state. That's what finally worked for me. Same Not Ready system state as you.

 

Yeah, drove it 400+ miles over the course of about 5 weeks, so there's that...

 

 

Nope. Was just trying to drive through it but clearly something else is causing it to not clear.

Have my guy checking the wiring now - the kicker here is I just need to get this all set in order to sell it...