Okay Need some Help Code PO135
Thread Starter
Racer
Joined: Aug 2007
Posts: 311
Likes: 5
From: Montgomery Alabama
Okay Need some Help Code PO135
Just did a Long tube headers and cats,company sent the wrong adapters for the 02 sensors, first codes were PO134,PO135, got the new adapters today installed the driverside adapter and I am only getting the PO135 code now, any suggestions on a fix ?
Burning Brakes
Joined: Jul 2007
Posts: 881
Likes: 2
From: hill billy hell
Do you have scan tool software?
It would be easy to trouble shoot if you had scan tool to monitor HO2s.
Any way read this link.http://www.gearchatter.com/viewtopic10479.php
sounds like a damaged sensor
It would be easy to trouble shoot if you had scan tool to monitor HO2s.
Any way read this link.http://www.gearchatter.com/viewtopic10479.php
sounds like a damaged sensor
Thread Starter
Racer
Joined: Aug 2007
Posts: 311
Likes: 5
From: Montgomery Alabama
Okay just checked the scanner and shows where thereis no activity on the 02 sensor, being a 04 I read where it has 2 types of 02 sensors who knows the part # to the rear sensors (GM Brand) ?
Thread Starter
Racer
Joined: Aug 2007
Posts: 311
Likes: 5
From: Montgomery Alabama
********UPDATE************
Today I found out that on a 2004 C5 you must have all 4 02 sensors connected, On earlier models you only have to move the rear 02 sensors to the front connections, So I hope this will help anyone else who does the Longtube with metric cats.
Now will have to wait for the extended connectors to get here
Also a note on the driverside 02 sensor it has a male connector going into a female, on the passenger side the 02 sensor has a female going into a male connector, and both rear 02 sensors both have females going into males. Anyone with another 2004 have this same setup ?
Today I found out that on a 2004 C5 you must have all 4 02 sensors connected, On earlier models you only have to move the rear 02 sensors to the front connections, So I hope this will help anyone else who does the Longtube with metric cats.
Now will have to wait for the extended connectors to get here
Also a note on the driverside 02 sensor it has a male connector going into a female, on the passenger side the 02 sensor has a female going into a male connector, and both rear 02 sensors both have females going into males. Anyone with another 2004 have this same setup ?
Last edited by 04tripleblkcoupe; Oct 31, 2007 at 09:40 PM.
I'm "Apache" a psycho dog
Joined: Jan 2001
Posts: 3,085
Likes: 31
From: N.J.
I had the same issues with the o2's, the late production 04's have a different plug than earlier C5's from what i was told by my tuner.
It may have been an anticipated change for the C6 05' model year and the vendor supplying them.
It may have been an anticipated change for the C6 05' model year and the vendor supplying them.
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Burning Brakes
Joined: Jul 2007
Posts: 881
Likes: 2
From: hill billy hell
********UPDATE************
Today I found out that on a 2004 C5 you must have all 4 02 sensors connected, On earlier models you only have to move the rear 02 sensors to the front connections, So I hope this will help anyone else who does the Longtube with metric cats.
Now will have to wait for the extended connectors to get here
Also a note on the driverside 02 sensor it has a male connector going into a female, on the passenger side the 02 sensor has a female going into a male connector, and both rear 02 sensors both have females going into males. Anyone with another 2004 have this same setup ?
Today I found out that on a 2004 C5 you must have all 4 02 sensors connected, On earlier models you only have to move the rear 02 sensors to the front connections, So I hope this will help anyone else who does the Longtube with metric cats.
Now will have to wait for the extended connectors to get here
Also a note on the driverside 02 sensor it has a male connector going into a female, on the passenger side the 02 sensor has a female going into a male connector, and both rear 02 sensors both have females going into males. Anyone with another 2004 have this same setup ?
Only reason I am guessing this is because they had to send me the
different harness that did not come in the box for my 2004
you must have all 4 02 sensors connected
the rear O2 sensors and have to have them turned off if not already done.
I just realized you said you had a tune so they may have turned them off.
They told me on an 04 with or with out cats to still
plug the sensors up and I should be good. Well I went without cats and still got rear activity codes.
I believe others with Hi-flow cats on an 04 have had the same problem.
If you have LGM's LT headers this is the harness they will send.
Got mine the next day when I called them.
Thread Starter
Racer
Joined: Aug 2007
Posts: 311
Likes: 5
From: Montgomery Alabama
Well you hit the nail on the head, I hooked all four sensors up this evening, Was trying to do so and get home before 10PM, well I left 1 sensor wire undone and when I started the car up multi misfire code, Put it back on the rack looked everything over and yep there it was.
Plugged it in let it idle for a little bit all seemed fine. locked the shop up and drove it home. ( Of course after the multi misfire I had to hit the throttle a couple of times to clear it all about 8 miles to the house).
Upon arriving at the house I checked for any DTC and none showed up will keep my fingers crossed, but atleast I know now that someone else other than me has gone through this too!
Plugged it in let it idle for a little bit all seemed fine. locked the shop up and drove it home. ( Of course after the multi misfire I had to hit the throttle a couple of times to clear it all about 8 miles to the house).
Upon arriving at the house I checked for any DTC and none showed up will keep my fingers crossed, but atleast I know now that someone else other than me has gone through this too!
Racer
Joined: Dec 2006
Posts: 314
Likes: 0
From: Newport News Va
I have the same problem with the P0135 code just came on today. All the connectors are connected and I still have this code. Could it be a bad 02 sensor ? By the way the cats have been on for three weeks now and this code show up today.
Burning Brakes
Joined: Jul 2007
Posts: 881
Likes: 2
From: hill billy hell
If your connectors and wires are good, it could be a bad sensor 1 bank 1.
That code and the cats are not related.
read this
http://www.gearchatter.com/viewtopic10362.php
That code and the cats are not related.
read this
http://www.gearchatter.com/viewtopic10362.php
