Again with the o2 codes, etc....
Thread Starter
Cruising
Joined: Mar 2008
Posts: 13
Likes: 0
From: Fort Worth Texas
Again with the o2 codes, etc....
The car: 2005 C6 Z51 MN6 with 28k miles. Longtubes, off road mid-pipe, corsa exhaust, vararam, diablosport being used for the "tune" and to pull the codes.
Haven't been driving my car or had time to work on it for a while but finally got the time. Thought I had it all figured out. I replaced both front o2 sensors, replaced the extensions as well. The exact same codes still come up. I can't recall them exactly right now but i think it was 30, 36, 50, 56, and then the other 4 o2/heater circuit codes,as well as one for the evap system and one for the reverse inhibit lockout solenoid. The guy at the dealership said the evap and reverse inhibit codes may be related to the o2 codes. I am confused now because all this stuff is brand new, and I just did this work last night, and the same codes are coming up still. I was told by somebody from diablosport that any of their tunes in the programmer will delete the rear o2s so it shouldn't matter that those connectors go to nothing, correct? If somebody could please help me with this, I'd so greatly appreciate it. I need to get those codes figured out so I can get them to warranty some other stuff (like the reverse inhibit solenoid....) this week, as warranty is about to be up.
Haven't been driving my car or had time to work on it for a while but finally got the time. Thought I had it all figured out. I replaced both front o2 sensors, replaced the extensions as well. The exact same codes still come up. I can't recall them exactly right now but i think it was 30, 36, 50, 56, and then the other 4 o2/heater circuit codes,as well as one for the evap system and one for the reverse inhibit lockout solenoid. The guy at the dealership said the evap and reverse inhibit codes may be related to the o2 codes. I am confused now because all this stuff is brand new, and I just did this work last night, and the same codes are coming up still. I was told by somebody from diablosport that any of their tunes in the programmer will delete the rear o2s so it shouldn't matter that those connectors go to nothing, correct? If somebody could please help me with this, I'd so greatly appreciate it. I need to get those codes figured out so I can get them to warranty some other stuff (like the reverse inhibit solenoid....) this week, as warranty is about to be up.
Safety Car
Joined: Aug 2006
Posts: 4,347
Likes: 25
From: Apache Junction AZ
Check fuse # 13 (25A) in the under hood fuse block. Several members, including myself, have found that fuse to be blown after installing cat backs. That fuse supplies power to the EVAP Vent Valve at the right rear of the car. It's called MRRTD on the fuse block cover. I'm getting under the car today, to see if there is physical damage to the valve. From what I can see in the shop manual, there is a real possibility that it can be hit by the exhaust pipe when removing/ installing the cat back. I still have a very lean condition after replacing the fuse, P0171 and P0174, and have also seen P0131 and P0137. When they did my B&B Fusion install, I had them put in a new tunnel plate and that may explain those last two codes as they had to disconnect/reconnect the front 02 sensors.
BJK
BJK
Last edited by 07MontRedcp; Sep 22, 2008 at 12:18 PM.
Thread Starter
Cruising
Joined: Mar 2008
Posts: 13
Likes: 0
From: Fort Worth Texas
I'll have to make sure and check that when I get home, thanks. People do seem to get careless with the exhaust, my reverse lockout solenoid plug had been unplugged/knocked loose and plugged back in backwards. I plugged it back in right but am going to try to get it warrantied as it is still throwing that code. The service advisor said it could just be one thing that is throwing all of those codes, maybe I'll luck out with that, thanks!
Thread Starter
Cruising
Joined: Mar 2008
Posts: 13
Likes: 0
From: Fort Worth Texas
Well, no fuses blown. Looks like they did at some point though because they had a 30A fuse in that number 13 spot instead of a 25A and had used a couple of the extra fuses. This is driving me nuts.
