View Single Post
Old 10-01-2013, 11:31 AM   #2
Track rat
Topless's Avatar
Join Date: Nov 2006
Location: Cucamonga CA
Posts: 3,687
Originally Posted by impboy View Post
Over the course of about 4 or 5 months, I kept tripping a CEL P0430 about every 3 or 4 weeks, especially after taking it on a longer trip (over 100 miles). I'd clear the code and sure enough it would come back.

After looking at nearly every post about this code, I found one that suggested that you check the gas cap and check for cracks in the rubber O-ring. Yep, mine had about 10 - 12 cracks in it

I got a new one from Pelican Parts for $15.50 including the pop rivet. (There are threads about how to remove the old pop rivet and for installing the new one.)

1000+ miles later and I haven't tripped the P0430 code once. Sometimes the problem isn't a big one or an expensive one. If I trip this code again soon, I'll be looking to replace some O2 sensors. Until then...

Good call! A fresh gas cap is the #1 cure for P0430. If you get the code again, look to gas tank venting and evap system. It will never be tripped by faulty O2 sensors.
2009 Cayman 2.9L PDK (with a few tweaks)
PCA-GPX Chief Driving Instructor
Topless is offline   Reply With Quote