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Dan
Dan, Technician
Category: Audi
Satisfied Customers: 24164
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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Audi A6 Quattro Avant: engine lite came on my 1999 audi a6

Customer Question

engine lite came on my 1999 audi a6 advent quattro
Submitted: 2 years ago.
Category: Audi
Expert:  Dan replied 2 years ago.
Hello, my name is ***** ***** I'm here to help get your problem solved. What codes are you getting? Thanks.
Customer: replied 2 years ago.
P0455--- one code that came up
Expert:  Dan replied 2 years ago.
This means your Evap system has a large leak, problem is strictly emission related. The most common causes are leaking gas cap or purge solenoid. You could try to replace both but if that doesn't help you will need to have a smoke test done to see where leak is. Let me know if you have more questions or if there is anything else I can do to help. Thanks.
Customer: replied 2 years ago.
were is the Evap system located in this car please
Customer: replied 2 years ago.
or were is the purge solenoid
Expert:  Dan replied 2 years ago.
The evap system is fuel vapor which goes from tank to engine. Here are diagrams and information on system along with picture of purge valve. Let me know if you have more questions, thanks.
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https://www.dropbox.com/s/m84eip0kdv36318/evap1.pdf?dl=0
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https://www.dropbox.com/s/zbpdf4e67rat4md/evap2.pdf?dl=0
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https://www.dropbox.com/s/z3l43lbskg4aykr/evap3.pdf?dl=0
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Customer: replied 2 years ago.
thank you
Expert:  Dan replied 2 years ago.
No problem, let me know how it turns out or if you run into more questions. You can reply to this answer at any time without additional fees. Thanks!
Customer: replied 2 years ago.
hello there should I replace these two (gas cap,,evap) first what do you think
Expert:  Dan replied 2 years ago.
I would recommend starting with the gas cap since that is easier/cheapest then move onto purge solenoid. Let me know how it goes or if you have more questions, thanks.
Customer: replied 2 years ago.
thank you let you know
Expert:  Dan replied 2 years ago.
Sounds good, thanks!
Customer: replied 2 years ago.
evaporator emission diagram not able to open that one
please
Customer: replied 2 years ago.
emission system diagram
can't open
can you send again
thank you
Expert:  Dan replied 2 years ago.
Here are the links again, let me know how it goes. Thanks.
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https://www.dropbox.com/s/m84eip0kdv36318/evap1.pdf?dl=0
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https://www.dropbox.com/s/zbpdf4e67rat4md/evap2.pdf?dl=0
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https://www.dropbox.com/s/z3l43lbskg4aykr/evap3.pdf?dl=0
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Customer: replied 2 years ago.
Thank you
recieved it
can open it
Expert:  Dan replied 2 years ago.
Good to hear, let me know how it goes. Thanks.
Customer: replied 2 years ago.
okay
bought gas cap does it need to go threw miles to actually terminate engine light or should it happen quickly,,engine light coming off
Expert:  Dan replied 2 years ago.
You will need to drive it for a couple days, I'd recommend resetting code to see if it comes back after replacing. Let me know how it goes, thanks.
Customer: replied 2 years ago.
thank you will do
Expert:  Dan replied 2 years ago.
Sounds good, thanks!
Customer: replied 2 years ago.
HELLO THERE
I RODE THE THE CAR FOR A FEW DAYS/ HAD ENGINE LITE RE-SET
CAME BACK ON TWO DAYS AGO
DID REPLACE GAS CAP
WHAT SHOULD I LOOK AT NOWTHANK YOPU
VIC
Expert:  Dan replied 2 years ago.
I'd replace the purge solenoid next, if that doesn't help you will need to have a smoke test done. Let me know how it goes or if you have more questions, thanks.
Customer: replied 2 years ago.
okay
will do im otdering it
thank you
ill get back to you
Customer: replied 2 years ago.
do you mean a purge valve
just ordered it
let me know
Expert:  Dan replied 2 years ago.
It is also referred to as a purge valve. Keep me updated, thanks!
Customer: replied 2 years ago.
Hello there
changed the purge valve re -set light , drove for about a day light came back on
what to do next
please
Expert:  Dan replied 2 years ago.
I would recommend having a shop do a smoke test at this point as it this code can be many things hard to find. Let me know how it goes or if you have more questions. Thanks.
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Customer: replied 2 years ago.
Thank You
Will do
Expert:  Dan replied 2 years ago.
Thanks, ***** ***** know how it turns out.