P0420 Code AGAIN!!!
Registered User
Joined: Jan 2004
Posts: 46
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or search for o2 simulator on ebay, it looks something like that. you dont have to do no drillin or such. cost 11bucks shipped. used it and itworks 100%, got rid of the engine light and passed emission.
btw, I need a pair of fog light cover for 01-02 coupe accord and H-emblem on grill
btw, I need a pair of fog light cover for 01-02 coupe accord and H-emblem on grill
Senior Member
Joined: Jun 2002
Posts: 8,320
Likes: 0
From: Mesa, AZ
scabone and totalmoron, I just registered to say you guys are unbelievable. Totalmoron took the conversation down with his moron comment and although dave could have expressed it better, he was only trying to bring it back up to a more mature level. I'm impressed with the way he eventually resolved the conflict and I'm sure you two are breaking your arms patting yourselves on the back for your knowledge of cars. I don't give a $hit how much you know about cars, it doesn't give you the right to berate people for trying to help.
Go ahead and reply to this message, I won't be back to see what 12 year old response you'll have. I'll be spending my time on forums with the adults.
Go ahead and reply to this message, I won't be back to see what 12 year old response you'll have. I'll be spending my time on forums with the adults.
Junior Member
Joined: Jan 2009
Posts: 1
Likes: 0
From: New York
Not to jump on an old thread but I was driving down 95 today and suddenly in my Acura (RL) the same P0420 code popped up and the check engine light came on-- along with a check emissions warning.
I have 77K on this car-- just wondering if the common workaround for this was the replace the Catalytic converter in your cars? I know we may have different vehicles-- but under the same Honda family, the architecture of these cars are still the same in may ways...just trying to see if I may need to make sure the CAT gets replaced by 80K
I have 77K on this car-- just wondering if the common workaround for this was the replace the Catalytic converter in your cars? I know we may have different vehicles-- but under the same Honda family, the architecture of these cars are still the same in may ways...just trying to see if I may need to make sure the CAT gets replaced by 80K
Senior Member
Joined: May 2002
Posts: 266
Likes: 0
From: NJ
I had the same exact problem...here's my original post...
https://www.honda-acura.net/forums/a...ode-p0420.html
And here's my update:
Update:
The check engine light cleared itself!! Turned off yesterday as I was driving. I basically didn't do anything except that I put in a bottle of Lucas Fuel Injector Cleaner and let the gas tank run almost empty before filling up again. I didn't do any resets, didn't pull any breakers, didn't disconnect the battery, didn't replace the cat or the O2 sensors, etc. This time I made sure the cap was on there securely and heard a few clicks, because the person pumping the gas just threw it on without a single click. I drove it for about 50 miles before the CEL extinguished. I did step on the pedal like once or twice and had the throttle wide open for a few seconds while driving.
:bowrofl::bowrofl::bowrofl:
https://www.honda-acura.net/forums/a...ode-p0420.html
And here's my update:
Update:
The check engine light cleared itself!! Turned off yesterday as I was driving. I basically didn't do anything except that I put in a bottle of Lucas Fuel Injector Cleaner and let the gas tank run almost empty before filling up again. I didn't do any resets, didn't pull any breakers, didn't disconnect the battery, didn't replace the cat or the O2 sensors, etc. This time I made sure the cap was on there securely and heard a few clicks, because the person pumping the gas just threw it on without a single click. I drove it for about 50 miles before the CEL extinguished. I did step on the pedal like once or twice and had the throttle wide open for a few seconds while driving.
:bowrofl::bowrofl::bowrofl:
Junior Member
Joined: May 2009
Posts: 1
Likes: 0
From: Glasgow, Scotland
I had the same exact problem...here's my original post...
https://www.honda-acura.net/forums/a...ode-p0420.html
And here's my update:
Update:
The check engine light cleared itself!! Turned off yesterday as I was driving. I basically didn't do anything except that I put in a bottle of Lucas Fuel Injector Cleaner and let the gas tank run almost empty before filling up again. I didn't do any resets, didn't pull any breakers, didn't disconnect the battery, didn't replace the cat or the O2 sensors, etc. This time I made sure the cap was on there securely and heard a few clicks, because the person pumping the gas just threw it on without a single click. I drove it for about 50 miles before the CEL extinguished. I did step on the pedal like once or twice and had the throttle wide open for a few seconds while driving.
:bowrofl::bowrofl::bowrofl:
https://www.honda-acura.net/forums/a...ode-p0420.html
And here's my update:
Update:
The check engine light cleared itself!! Turned off yesterday as I was driving. I basically didn't do anything except that I put in a bottle of Lucas Fuel Injector Cleaner and let the gas tank run almost empty before filling up again. I didn't do any resets, didn't pull any breakers, didn't disconnect the battery, didn't replace the cat or the O2 sensors, etc. This time I made sure the cap was on there securely and heard a few clicks, because the person pumping the gas just threw it on without a single click. I drove it for about 50 miles before the CEL extinguished. I did step on the pedal like once or twice and had the throttle wide open for a few seconds while driving.
:bowrofl::bowrofl::bowrofl:
So I got the O2 sensor cleaned out (some gunk came out of the middle of it) and...the light went out again! Just driving it to see if this is a proper solution - I'll be back...
Junior Member
Joined: Jun 2009
Posts: 1
Likes: 0
From: florida
Cat code for 2.3L 1998 EX
I have the P0420 code also but I have noticed a slight loss of power and a 2-3 mpg loss. Since the P0420 code can indicate a faulty Catalytic converter or corresponding O2 sensors, is the decrease in fuel economy more indicative of a faulty O2 sensor prior to the Cat converter since it helps determines the proper fuel to air mixture?
