tkaugh29

can someone help me find what these codes are?:

P0036
P0054
P0141
P0420

ever since i had my ZZP header/Dp installed i have had the code P0420, so that is most likely because of the high flow cat, its emissions related and what not, but i used my aeroforce to scan tonight to check and see if i was throwing any other codes (my CEL is constantly on because of P0420) and i saw that i had 3 ******* new ones..now is there somewhere i can look to find these or some sort of guide that will tell me?

thanks.

XM15

P0420 is low catalyst efficiency

I've got that one too.

P0141 is an O2 sensor heater circuit malfunction

P0036 says H02S Heater control circuit sensor 2

Sorry, but my book doesn't have P0054

tkaugh29

ok those would make sence seeing as i installed a wideband the other day and the wire for the 02 sensor got fucked up. it was stripped to the wire in some parts....



and where do you get these codes?

XM15

I bought a book to go with my code reader.

There is also this sticky: https://www.cobaltss.net/forums/showthread.php?t=3480

tkaugh29

oooo thanks!!!

+rep haha

XM15

Ah yes, I remember those days!

sick06cobalt

lol those were good days

like he said po 420 is a low cat efficency code.. i have it also... did you break in your cat for 500 or so miles?

tkaugh29

sure did!
what do you guys suspect these codes mean? like how can i fix them? (except for the cat code)

johnkb8

more info on this 420 code, my buddy has it

ss/sc
full exhaust
intake
gm stage 2
smaller pulley

LopsidedJester

i'm sure all or most of those are from the post cat o2 sensor, nothing to be worried about, but i think the only thing you can do is get someone with hptuners to turn them off. I'm not running a catalytic converter right now and the only code i get is p0140 consistently, sometime p0136, but other than that nothing. (i have an o2 sensor fooler from weapon-r).