P2404 CEL on a 2007 Mazda 3 2.3L GT Hatchback??

[davepolak]

hey guys i got a check engine light and scanned it with my scanner and this comes up p2404 something with the EVAP? i had the same sort of thing on my fathers van and all i did was put grease on the gas cap.

I put grease on the gas cap and the CEL still poped up after being cleared. i have 2 Mazda 3's and so i just swapped the gas caps to see if that would help but no it did not. it looks like the CEL pops up after being cleared every 3-5 start-ups.

if anyone knows more info about this or experienced the same problem could they comment. thanks

[davepolak]

hey guys i got a check engine light and scanned it with my scanner and this comes up p2402 something with the EVAP? i had the same sort of thing on my fathers van and all i did was put grease on the gas cap.

I put grease on the gas cap and the CEL still poped up after being cleared. i have 2 Mazda 3's and so i just swapped the gas caps to see if that would help but no it did not. it looks like the CEL pops up after being cleared every 3-5 start-ups.

if anyone knows more info about this or experienced the same problem could they comment. thanks

my bad the engine code was p2402

[morganc]

An evap leak code could be any part of the evap system. You might want to take it to a shop and see if they'll do a leak detection on it. COuld be a crack in the canister, bad vaccuum lines etc.

[davepolak]

thanks for the reply, will any shop do this or should i go to dealer. i would like to fix myself but i dont want to waste time looking for the source of the problem

[r4BBiT]

hey guys i got a check engine light and scanned it with my scanner and this comes up p2404 something with the EVAP? i had the same sort of thing on my fathers van and all i did was put grease on the gas cap.

I put grease on the gas cap and the CEL still poped up after being cleared. i have 2 Mazda 3's and so i just swapped the gas caps to see if that would help but no it did not. it looks like the CEL pops up after being cleared every 3-5 start-ups.

if anyone knows more info about this or experienced the same problem could they comment. thanks

I think Mazda 3s have additional light on the instrument panel for the gas cap being loose.

[davepolak]

oh really? didnt know that but i ruled that out because when i swapped gas caps with the other mazda i have no codes showed for the "faulty one that i thought was the problem". if it helps its been getting alot warmer here and looks like thats what causes the code to come on, every other startup. i dont overfill the tank anymore to see if thats the problem, but its difficult to rule things out.

[McGuyver_3]

It will not be temperature related. That is more likely to be coincidence. Either you have a leak somewhere, bad gas cap(already ruled out. UNLESS your filler neck is rotted where the gas cap seals. But I haven't seen this on a mazda.) pump is dead, ECU is cooked or you have a wiring issue. My guess would be wiring issue or dead pump. That's basing on what I see at work(not mazda dealer). To check for the leak you will require a smoke check machine.

[davepolak]

thanks for your reply, and okay i want to check the evap system for a leak. ive seen people rig up their own devices like with a cigar or smoke machine to test for leaks. do you think this would be safe? if so where would i have to hook it up to find the potential leak. diagrams would be nice if possible :) thanks again