P0153 Code Questions
Thread Starter
Racer
Joined: May 2003
Posts: 294
Likes: 0
From: Albany OR
P0153 Code Questions
I installed Supermaxx headers a while back and then started throwing P0153 codes. I know what the code is, and it came every other ignition cycle. I replaced both front oxygen sensors figuring the old one were getting slow. I'm still getting the code, just not a regularly. I am using the harness extenders that came with the headers, and everything is secure.
Any ideas on why I might continue to get the codes? Could it be becasue of the harness extenders? PCM contacts? I do occasionally get a P0133 (driver's side) code as well.
It doesn't cause any drivability problems, just an annoying light. The new sensors should be switching fast enough to pass diagnostics, so I'm at a loss.
Thanks
Any ideas on why I might continue to get the codes? Could it be becasue of the harness extenders? PCM contacts? I do occasionally get a P0133 (driver's side) code as well.
It doesn't cause any drivability problems, just an annoying light. The new sensors should be switching fast enough to pass diagnostics, so I'm at a loss.
Thanks
Safety Car
Joined: Oct 2001
Posts: 3,504
Likes: 25
From: Insert Wittty Comment here
Since they are basically a copy of the LG headers, you are probably seeing the same issue that some folks have with LGMs which is that the 02 sensor cools off too much, as it is too far back from the exhaust stream. LG's rather ingenious solution was to use the rear 02 sesnors which are higher wattage and won't cool down like the lower wattage front o2 sensors thus not generating the slow switching error. The only catch is that the wire harnesses are different front to back, and you can't splice them. So, LGM adapter harnesses to convert your rear o2s to fronts would be required.
So, you may have to call LGM for a set of adapter plugs... BTW, they come included in the LGM package...
But, alos check to make sure you have no leaks...
Good luck.
So, you may have to call LGM for a set of adapter plugs... BTW, they come included in the LGM package...
But, alos check to make sure you have no leaks...
Good luck.
Pro
Joined: May 2000
Posts: 619
Likes: 9
From: Thonotosassa Florida
Originally Posted by vettatude
I wonder if wrapping the collectors would help keep some heat in. I went all day yesterday without a code, but it's back today.
Instructor
Joined: Aug 2003
Posts: 233
Likes: 0
From: Batesville AR
codes after log tubes
I've also got the LGM LTs and used to throw those codes also. Now its only the p0153. I've been told its contamination and replace the sensors. However when a scan tool is used while the car is running the O2's are functioning perfectly. And since some have changed their O2's and still have the problem I don't feel thats the solution either. The long tubes have the O2's too far back, period. Wrapping just the collector would'nt be enough IMHO most of the primary pipes would have to be wrapped also. I've been told that this can be tuned out of the PCM ? But if wrapping just the collectors works let us Know!
