Took the car to the dealer because im throwing these P0138 P0420 P0606 and two of them are emissions related so i figure warranty might cover it. Dealer says exhuast is damaged thats why the first two codes are there but the third one has me worried could the damaged exhaust cause the p0606 code? If so will it go away once the o2 and cat is fixed?

Also car has no drivability issues and is bone stock now

 

What's up with the "damaged" exhaust? Is there something visibly wrong with it?

First could be bad O2 sensor. The second code could be a bad CAT - but could be caused by the first problem.

That is, if I'm reading these correctly:

http://www.obd-codes.com/p0138
http://www.obd-codes.com/p0420

Third one, I really don't know. That site doesn't have any specifics on it. Just says this:

P0606 PCM Processor Fault

 

They said it looked like it bottomed out. I knew something was wrong with the exhaust because i could hear a weird ticking noise under the car. Yea i saw those definitions too but that p0606 has me a little worried. Im just wondering of the damaged o2 could somehow cause that code

 

now? as in it was modified and you changed it back? if so what did you do?

 

Had a dezod turbo kit on for about a year. Tuned by ptuning. Turbo seals went out. Went back to stock. That was in september no issues till recently

well took my car home from the dealer to have a mechanic friend look at it because the dealers change insane amounts for simple work. He takes one look and says there is nothing wrong with that section of exhaust its just a small dent the size of a nickel. He says the cat is probably bad so hes gonna get me a new one and we will see what happens with that p0606 code. Moral of the story dealership service departments can go to hell

 

Hey I had the p0420 code and the guy at the auto hobby shop on base told me to use octane booster and 93 octane gas because it might just be the o2 sensor in the header is covered with carbon build up or something and its not reading right. So i did it and after I used up 1/2 a tank of gas I went back got the CEL delete and it hasn't come back since.

 

Yes. Or more specifically what ever damage you did caused that code to trigger.

The p0138 is for the seconday oxygen sensor with monitors catalyst efficiency, has min bearing on driveability. P0420 has no bearing on driveability, just emissions, but this will trigger if the seconday o2 sensor is faulty. The p0606 triggers when there is a problem with the oxygen sensor, sometimes an exhuast leak can cause it.