How To Clear Code? P0420?
Team Owner
Joined: Sep 2005
Posts: 29,113
Likes: 2,194
From: Big Bend Country, TX
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15- '16-'17-‘18-‘19-'20-'21
NCM Lifetime Member
LG Motorsports here in TX will reset the COT #'s for $150. If I have a full LS2 tune done, the cost is $400 for everything and includes the dyno work.
Thread Starter
Melting Slicks
Joined: Mar 2005
Posts: 2,517
Likes: 0
From: Palm beach Florida
St. Jude Donor '05-'06-'07-'08
Originally Posted by beezeye
You don't need one, butt.....if you haven't had a custom tune after putting that stuff on, then that's what you could really use.
I've got a Honker, Kooks, hiflow cats, and a Predator tune - which is probably the minimalist way to go. I love the car with my mods, and I've had no problems with that setup. A real dyno tune by a good tuner using HP Tuners or LS2 Edit tuning software would be better.
Most of the custom tunes will disable the COT input so your Cats don't throw that 0420 code. You can do it with a Predator by setting the COT enable to a high 1200 degrees so it just isn't a factor.
I think that's the problem YellowVette22 had that prompted his initial post. He had a custom tune, but put the factory tune back in with his Predator before a visit to the dealer. As soon as he reinstalls his custom tune that disables the COT parameter, I'm sure he won't have any problems.
Bob
I've got a Honker, Kooks, hiflow cats, and a Predator tune - which is probably the minimalist way to go. I love the car with my mods, and I've had no problems with that setup. A real dyno tune by a good tuner using HP Tuners or LS2 Edit tuning software would be better.
Most of the custom tunes will disable the COT input so your Cats don't throw that 0420 code. You can do it with a Predator by setting the COT enable to a high 1200 degrees so it just isn't a factor.
I think that's the problem YellowVette22 had that prompted his initial post. He had a custom tune, but put the factory tune back in with his Predator before a visit to the dealer. As soon as he reinstalls his custom tune that disables the COT parameter, I'm sure he won't have any problems.
Bob
Is there a way to find out if its disabled or up at 1200 deg? i have the predator..
