Will the codes ever stop

dansou5 · Post by **dansou5** » Mon Aug 06, 2007 11:14 am

Alright pulled the codes today and i got 4 of them.

P0420(M) 1/1 Catalytic Converter Efficiency Catalyst 1/1 efficiency below required level.

P1684 Battery Disconnected in the last 50 Starts The battery has been disconnected within the last 50 starts.

Those two arent important and i figured they would be on due to me deleting the cat.....

P0455(M) Evap Leak Monitor Large Leak Detected A large leak has been detected in the evaporative system.

P0442(M) Evap Leak Monitor Medium (0.040) Leak Detected A small leak has been detected in the evaporative system \

These are the two i am worried about. I know i have a slight exhuast leak from where the cat connects to the mid-pipe. Is that what would cause it.

lvlistchif · Post by **lvlistchif** » Mon Aug 06, 2007 2:07 pm

yea that leak isnt good... not sure if you have a srt or a 00 but the evap hose is on the top of the block im pretty sure if thats what the pcv valve is or maybe ehhhh actually im not 100% sure wait for another response. i think it was optional on some engines

latief · Post by **latief** » Mon Aug 06, 2007 2:14 pm

so my question is, did you have the check engine light on ? how did you know your car was throwing codes.....?

Adionik · Post by **Adionik** » Mon Aug 06, 2007 3:03 pm

Wow i have every code you do. I don't know how to fix them either. I really don't wanna take it to the dealer...

BlackRoseRacing · Post by **BlackRoseRacing** » Mon Aug 06, 2007 6:50 pm

P0455(M) Evap Leak Monitor Large Leak Detected A large leak has been detected in the evaporative system.

P0442(M) Evap Leak Monitor Medium (0.040) Leak Detected A small leak has been detected in the evaporative system

Thats typically a sign of a Leak Detection pump problem or atleast the big hoses going to it. Its located by the passenger side rear wheel, look for any swelled up hoses or broken hoses....

dansou5 · Post by **dansou5** » Tue Aug 07, 2007 8:46 am

I knew that the first two codes were on so i have the check engine light on. So every no and then i check to make sure nothing else is on but this time i found the two evap codes running.

ragek23 · Post by **ragek23** » Wed Aug 08, 2007 12:58 am

looks like you have a bad cat!

and no the codes don't stop

Post by **occasional demons** » Wed Aug 08, 2007 12:21 pm

I'd check what BRR said, plus the obvios - fuel cap. The Evap system pulls a vacuum on the entire fuel system to keep fumes from escaping to the atmosphere. if there is a leaking hose somewhere between the charcoal canister and the tank, or the gas cap is loose /defective it won't pull a vacuum.