Hey guys and girls. I was driving my car yesterday. And my CEL came on. I got the code read, abd it ended up being p0420. I've done some research, and a whole lot of options. Can anyone help me narrow it down?

 

what year is the car, factory cats? might have a bad cat or if it has test pipes you might need to do defoulers

 

Yup^

 

Bank 1 cat problem, and as above more info needed.

 

It's an 05, no test pipes. Stock cats. Would I just need to replace the cat?

 

either the cat or the sensor. try swapping the sensors left to right and seeing if the code stays the same

 

^ what do you mean? Just swap the o2 sensors?

 

You have two sensors. Swap them from side to side and see if the code stays the same

 

I would reset it first and see if it comes back. It may have been a fluke like the p0420 I had in my old car. I cleared it twice then it never came back again in 3 years.

 

or just replace the o2 sensors, they arent that expensive. stock cats will be expensive, if they are bad replace with high flow cats or test pipes with the bungs

 

From my experience the issue was the cat. I think it was very dirty or possibly clogged. Not sure what my mechanic did but fixed the issue

 

How much are the o2? Abd he probably gutted the cat. I had an rx8 and I gutted the cat cuz it was losing power, after that never had an issue with power loss. And what high flow cat is good? But I'll clear the code to see if it comes back.

 

kinetix, berk... depends on your budget

 

Ok, I saw the kinetix.just wasn't sure if it was good. I'll disconnect the battery to and key y'all know what happen.

 

FYI, if your O2 sensor says you have a bad cat, chances are very good that the sensor is working just fine.

 

Ok thanks!

 

I reset the code driving the car right now it's been 26 miles since it was rest. Nothing yet. Another question. My clutch gets stuck half way, and I know that these clutches suck big donkey ones. But what can I do to resolve this problem?

 

HR (07-08) right? if so, your slave is going out... get ready to replace it

 

Nope 05, base model. Not sure what hr is btw :P I'm a z noob :P

 

slave may be going out, or you may need to flush and fill the fluid