CEL P0455 1998 EVAP Sys leak: Audi A4 Quattro Help
Hi,
Just wondering if anyone has any clue as to the problem with Cel P0455 on an 98 Audi A4 quattro. Here is the diagnostic report from a code reader: P0455 Evap Emission sys leak detected (gross leak / no flow) misfire ok fuel sys ok comp component ok cat mon inc htd catalyst n/a evap syst mon ok sec air system n/a a/c refrig mon n/a oxygen sens mon inc oxygen sens htr egr system mon n/a I also smell gasoline inside the cabin (definitely different from exhaust gasses). Also, when I get near empty and gas light comes on, after a car restart, gas level goes back to a little over empty and gas light turns off (a definite move in the needle, not just parking on inclines, etc.). Happened about twice before I decided to refuel. I have checked as many vacuum hoses and had a roaming mechanic do the same and no hoses were leaking (but this wasn't a very complete check). Any ideas? I dont feel like spending over a 100 bucks just to diagnose this at the dealership. Thanks! |
start with checking your gas cap make sure it isnt lose and make sure it isnt leaking also check your EVAP Canister Purge Regulator Valve.. thats were i would start.. 2 most common things to fail to my knowledge
|
Thanks man. I forgot to mention I got the same problem when I lost my gas cap (however cel read large leak, now reads a little different). Replaced it with an aftermarket one. Could that really be it?
|
UMMM.. idk i mean if it was $2 gas cap from autozone then i mean i wouldnt trust it.. but i dont trust anything from autozone.
i mean that i couldnt answer just go to a hole in the wall place that does state inspections and ask them to test your gas cap for you for a couple bucks serioulsy it takes like a minute to do it. if it is ok clear the fualts close the gas cap real good. and i just noticed i looked over it you say you can smell fumes in your car maybe you have an EVAP line under your car got dragged when you were leaving some place and put a small hole in it .. idk man its hard to test evap systems without specialty tools like a smoke meachines are legit take the gas cap off put on the smoke machine start pumping it in next thing you know have smoke coming from somewhere if there is a leak!! and if it doesnt leak from anywhere while you are doing the smoke leak test its the gas cap. |
Did u find out what it was? Im having the same exact problem but when i put gas and i tirn it on it goes back of..and i need to cranck it a lot and step on the accelerator till it goes on and keep high rpm for about a min then in fine wont happen till i put gas again..any ideas of what could it be?
|
Originally Posted by Rony7
(Post 1490597)
Did u find out what it was? Im having the same exact problem but when i put gas and i tirn it on it goes back of..and i need to cranck it a lot and step on the accelerator till it goes on and keep high rpm for about a min then in fine wont happen till i put gas again..any ideas of what could it be?
|
I have the 455 code also. Did a smoke test and had smoke coming out of the filter of the leak detection pump. I have read replacing the pump did not fix the CEL. I also had smoke comimg out of the brake assist can. Is that ok?
Newbie |
All times are GMT -4. The time now is 10:01 PM. |
© 2024 MH Sub I, LLC dba Internet Brands