service engine soon light came on, ran code reader and it came back with 0442 code? i tried to find a code list on forum but couldnot find it. thanks
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03-19-2009
service engine soon light came on, ran code reader and it came back with 0442 code? i tried to find a code list on forum but couldnot find it. thanks
, gm performance tune by cowl327 (ls1 truck.com)
,cold air intake, mobile 1 full synthetic, magnaflow exhaust,new tranny with shift kit,white knuckled beautiful lady holding on to steering wheel!
03-19-2009
That's an EVAP leak code, check your gas cap.
03-19-2009
thanks for the quick response!Originally Posted by Scimmia
, gm performance tune by cowl327 (ls1 truck.com),cold air intake, mobile 1 full synthetic, magnaflow exhaust,new tranny with shift kit,white knuckled beautiful lady holding on to steering wheel!
03-19-2009
0442 is a small evap leak code,most times will be the cap either loose or not sealing anymore needing replacement,if you clear it after that and it comes back, you probably have a bad evap canister purge valve
03-19-2009
thanks gentlemen, was a loose gas cap, and i was the last one to put gas in it!
, gm performance tune by cowl327 (ls1 truck.com),cold air intake, mobile 1 full synthetic, magnaflow exhaust,new tranny with shift kit,white knuckled beautiful lady holding on to steering wheel!
03-20-2009
sweet
01-03-2015
Ive had this problem for a couple of years. Replaced purge valve, another part behind the left rear wheel inner plastic fender, had the dealership do a smoke test which detected no leaks but they replaced fuel pressure sensor. Light stayed off for about 2 weeks, then came back with same evap code. I have not replaced the fuel cap recently(current one is a few years old) I concluded from another post on this subject that a smoke test will NOT necessarily detect a small leak at the fuel cap. Is this correct? What other components in the EVAP system are there? Thanks
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