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Joined: Nov 2002
Posts: 198
HiRo-CuBe
Member
HiRo-CuBe
2000 Liquid Silver Toyota Celica
Member
2000 Toyota Celica

Joined: Nov 2002
Posts: 198
Riverside, CA
Mar 23, 8:11pm - #424350 
Code pulled for CEL light...

well I went to autozone and borrowed the device to pull the code for the CEL light that I got and this is what it said:

P0420 Catalyst Efficiency Below Threshold (Bank 1)

1. catalytic converter defective
2. engine misfire or running condition
3. large vacuum leak
4. engine oil leakage into exhaust valve guide seals piston rings
5. refer to AZ commercial preferred customer

What'd you guys think the problem might be? The guy at Autozone said the O2 sensor might have been knocked out or something. Thanks

Joined: Jun 2003
Posts: 216
Burgh_Mike
!!!!
Burgh_Mike

!!!!
2003 Toyota Celica GT

Joined: Jun 2003
Posts: 216
Pittsburgh
Mar 23, 11:51pm - #424351 
I have the same code right now...popped up right after having it inspected (emissions too). cry

Joined: Apr 2004
Posts: 427
speed_celica
Senior Member
speed_celica

Senior Member
2000 Toyota Celica

Joined: Apr 2004
Posts: 427
Calgary, AB, Canada
Mar 24, 12:16am - #424352 
Damn, that's sounds bad! Guess you'll be heading to the dealer!

Joined: Nov 2002
Posts: 198
HiRo-CuBe
Member
HiRo-CuBe
2000 Liquid Silver Toyota Celica
Member
2000 Toyota Celica

Joined: Nov 2002
Posts: 198
Riverside, CA
Mar 24, 2:16am - #424353 
aw man...u serious? I hope it's nothing too big. I don't wanna spend hella money fixing my car again f*ck..

Joined: Aug 2003
Posts: 4,278
Virgilson
TheFilipinoCrew
Virgilson

TheFilipinoCrew
2000 Toyota Celica GT

Joined: Aug 2003
Posts: 4,278
Pomona, CA
Mar 24, 2:38am - #424354 
damn...your soo lucky..the AutoZone like a few houses down from me doesn't even let me use the damn CEL Reader...

Joined: Dec 2004
Posts: 218
gts_drew
Member
gts_drew

Member
2000 Toyota Celica

Joined: Dec 2004
Posts: 218
nc, usa
Mar 24, 2:42am - #424355 
i know what that is i just got mine fix its your cat. if your car has under 80,000 the toyota has to fix it for free because the cat. in the celica are gov. cover untill 80,000 i got mine fix at 79,000 miles

Joined: Feb 2004
Posts: 965
morris
BerraquĆ­sima!
morris
2000 White Toyota Celica GT
BerraquĆ­sima!
2000 Toyota Celica GT

Joined: Feb 2004
Posts: 965
Orange County, CA
Mar 24, 2:52am - #424356 
I got the same last october...
but my light comes and goes by itself... sometimes within a few miles, others, withing hundreds. I'll take my car for diagnosis (besides: brake recall, oil change- they're so nice a my toyota dealer- and other minor maintenance... ) and see what happend... I think the problem is the O sensor...

Joined: Nov 2002
Posts: 1,073
grcelica
Specialist
grcelica

Specialist
2001 Toyota Celica GT

Joined: Nov 2002
Posts: 1,073
NW, PA
Mar 24, 2:56am - #424357 
It is one of the following--
1). Bad cat
2). Bad O2 sensor
3). bad pcv valve
4). dirty cone filter (do you have Injen SRI ?) Recharge your filter
5). A large vacuum leak somewhere.

The cat is warrantied to 80K

Joined: Sep 2002
Posts: 91
defjukie
Member
defjukie

Member

Joined: Sep 2002
Posts: 91
strong island
Mar 24, 9:52am - #424358 
Had the same code a month ago. Dealer gave me a new cat under the 80K/8yr warranty. thumbsup

Joined: Oct 2003
Posts: 55
rockfordcelica
Member
rockfordcelica

Member
2000 Toyota Celica GT

Joined: Oct 2003
Posts: 55
San Antonio, TX
Mar 25, 4:56pm - #424359 
I HAVE THE SAME CODE HAPPENING TO ME ALSO, SO IT IS THE CAT CAUSING THE PROBLEM?

Joined: Oct 2003
Posts: 55
rockfordcelica
Member
rockfordcelica

Member
2000 Toyota Celica GT

Joined: Oct 2003
Posts: 55
San Antonio, TX
Mar 25, 4:58pm - #424360 
BUT IM ALSO GETTING A CODE THAT SAYS BANK ONE SYSTEM TOO RICH, BUT I HAVE TRIED USING ALL DIFFERENT TYPES OF FUELS AND NOTHING HELPS.

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1970 Chevrolet Chevelle
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