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Old 10-01-2013, 11:26 AM   #1
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CEL P0430 fix that worked for me

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...



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Old 10-01-2013, 11:31 AM   #2
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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.
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Old 10-01-2013, 12:35 PM   #3
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Thanks for the info! I thought I read somewhere about the O2 sensors being an issue but I guess I was wrong.
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Old 04-16-2014, 09:34 AM   #4
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Digging up this old thread doing a search. My 02 keeps tripping the 0430 code as well. And I am having problems with fueling my car, the pump clicks off and I have to reseat the nozzle a lot to reseat it. Can the vent system now be faulty giving me the code?
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Old 04-16-2014, 09:44 AM   #5
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There is a post somewhere discussing the tank vent system creating problems with fueling and hot starts. I do not recall if it mentioned a CEL. A search for hot start issues might turn up the posts.
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Old 04-16-2014, 02:18 PM   #6
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Originally Posted by oc-boxster View Post
Digging up this old thread doing a search. My 02 keeps tripping the 0430 code as well. And I am having problems with fueling my car, the pump clicks off and I have to reseat the nozzle a lot to reseat it. Can the vent system now be faulty giving me the code?
Don't know about the error code, but some CA gas pumps would click off instantly when I filled up because of their fume recovery sealing fill nozzles and the short fill tube and tight bends in the cars fill line. Took forever to get 1/2 tank even. Never happened since I drove it to UT.
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Old 04-16-2014, 02:28 PM   #7
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Thanks timco!

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