CEL on, P0420 Code threw
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Last time I had this much fun some furniture got broken!
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CEL on, P0420 Code threw
as stated in the title I got the code:
P0420 Catalyst System Efficiency Below Threshold (Bank 1)
Any ideas as to what it is? I am hoping a sensor, and not the cat, but I could be wrong about what the code means too.
Any help at all is appreciated
P0420 Catalyst System Efficiency Below Threshold (Bank 1)
Any ideas as to what it is? I am hoping a sensor, and not the cat, but I could be wrong about what the code means too.
Any help at all is appreciated
Thread Starter
Last time I had this much fun some furniture got broken!
Hey! Look At Me!! I'm a Supporting Member!!
iTrader: (1)
Joined: Mar 2004
Posts: 8,839
Likes: 2
From: PA
Rep Power: 360 










I forgot to follow up; no more code.
I ran some fuel injector cleaner and some 89 octane, and after some hard driving it went off. So there was some crap in my cat or sensor that finally burned out.
On another forum everyone was telling me it couldn't be that, but I win lol
I ran some fuel injector cleaner and some 89 octane, and after some hard driving it went off. So there was some crap in my cat or sensor that finally burned out.
On another forum everyone was telling me it couldn't be that, but I win lol
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