well like the subject suggests i have a P0141 code popping up. I know what it technically means but when i search for reasons/answers/fixes all i get it the same technical answer that my code reader gives me. any suggestions on where i should look or how to fix would be great. thanks in advance...

 

 

sorry i should have given more of a back story. i have 2000 ls that ive had for six years. ive done all the work on it myself including the dreaded LIM leak and head gaskets. the car has 123,*** on it. the only mods that i have are zzp downpipes with cats that i put on only a few months ago (thinking thats what the problems are coming from/ started around) borla cat back and self made short ram intake.

 

that's prob how the code pop up, when removing the old cat and installing the dp. have you try to remove the code?

 

yeah ive tried removing the code but it pops up quickly after

 

 

are you removing the code or just clearing it?

Removing means to delete the code from your PCM, clearing it just erases it until the next time your car finds that problem.

It's common that a downpipe + high-flow cat will set off a code, because your PCM is used to the restrictive stock pipe, so now it thinks this new one is broken.

To fix it without a tune you would need to buy an O2 simulator that replaces the rear O2 sensor.

 

i would need the simulator even though the new O2 sensor is hooked up and in? also how would i go about deleting the code from the PCM because youre correct when you say that i have been just clearing it

 

To fully delete it, you would need tuning software, or a canned PCM from a place that does those box tunes, like zzp with the delete already done.