How to debug P0455 & P0442 (large/small leak) Chrysler Sebring 2002 6cyl
 

My 2002 Chrysler Sebring, with 75K miles, has a long-standing P0455 & P0442 (large/small evap leak) which comes back after I erase the codes.

Can someone give me advice on WHERE to look for the leak?

I found this Po455/P0442 video, for a different Chrysler:

Which says the 'evap vent valve" often goes bad based on this TSB:
http://www.wjjeeps.com/tsb/tsb_wj_2500102a.pdf

That guy in the video suggests getting a new evap vent valve from
Pollard Mopar Parts 2360 30th street, Boulder, CO, 80301, Phone: (877) 439-5337
http://www.partswebsite.com/pollardmopar/

But since he's on a different vehicle, do you have a picture of WHERE the "evap vent valve" is located on the 2002 Sebring?

There doesn't seem to be an 'edit' button to edit the posts so sorry for the repeat posts (did I miss where I can 'add' data?).

Looking at the titles of the 55 TSBs on the 2002 Sebring:
2002 chrysler sebring Technical Service Bulletins

I don't see anything on the P0455 and P0442 small & large evap leaks.

My CEL goes on only after a week or two of driving - but it will always go on after I reset it so it's not a fluke. Both codes always show (which confuses me because if I had a small leak, then I don't have a large leak - but if I have a large leak - I must have a small leak).

If you have a picture of the 'evap vent valve' and of the 'evap purge valve' on the 2002 Chrysler Sebring 6 cylinder, that would be fantastic!

I already replaced the gas cap - so that's why I want to figure out WHERE the 'evap vent valve" and "evap purge valve" lie. If I could easily get to them, I'd just replace them.

I don't have a smoke machine as suggested in this Sebring forum:
* Chrysler Sebring/200 Convertible Club * • View topic - P0455, P0442 codes looking for evap canister

A smoke machine is also suggested in this Q&A:
2001 Chrysler Sebring DTC P0442 and P0455 What hose should ... - JustAnswer

Since I don't have a smoke machine, I'm thinking it will be less expensive to just replace the evap vent valve and the evap purge valve than to get the smoke test. If I only knew where these two valves are.

I found this diagram for a 2002 Sebring:
2002 Sebring: trouble codes..flow..the best place to start looking - JustAnswer

But it's hard to find on that diagram the suspect parts:
https://www.justanswer.com/uploads/j...5_80b201f7.gif

https://www.justanswer.com/uploads/j...5_80b201f7.gif

Do you have a picture of the evap vent valve and evap purge valve for the 2002 Sebring 6 cylinder?

... shameless bump ....

Do any Sebring owners have advice as to the typical cause of the P0455 and P0422?

Where would you look first?

Most common cause is a faulty or loose gas cap. I had the same problem, had the system smoke tested, 2 hoses atop of the gas tank were split. Replaced the hoses and the problem disappeared. The problem has since returned, smoke test shows no leak, so next suspect is the purge solenoid. Hope this helps.