P0430 and P0420
Thread Starter
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Joined: Jul 2014
Posts: 75
Likes: 8
From: Gainesville VA
P0430 and P0420
Hey guys, so I've been trying to figure out some codes I've been getting in my 02 Z for a while now. Been getting the CEL with P0430 and P0420. I've got LT's, high flow cats, and a catback, but oddly enough the car is also tuned as well, by Jeremy Formato. So the car should have those rear 02's tuned out. Does anybody know of an instance where the car would throw those codes, even with the computer tuned to not read the rear 02's? I want to see what I can troubleshoot before I take it to get the tune looked at. Weird one, i know..!
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Joined: Apr 2007
Posts: 11,152
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From: South Western Ontario
If done properly, the rear O2 sensor codes are all set to give no error reporting and no SES message. The no error reporting means no MIL or stored codes. So, it has to be the tune.
Thread Starter
Advanced
Joined: Jul 2014
Posts: 75
Likes: 8
From: Gainesville VA
Thanks guys. Yeah I agree, I figure it has to be the tune. It was actually the previous owner (another forum member) who had the car tuned by him, quite a number of years ago..so I'll probably contact my tuner who I use closer to me. Just figured I'd pick ya'lls brains before I bring it in, to make sure there's nothing obvious I'm missing.
I'll update everybody once I get the tune looked at.
I'll update everybody once I get the tune looked at.
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