Try the Gas Cap first.
Evapoartive Emissions Leak - How to find it
Hi,
I have an 08' Rabbit and for the first time since I've owned it (about to hit 100k miles) I have an engine light on that I cannot turn off. The code reads
"PO442 - Evaporative Emission Leak -small leak" and I have no idea even where to start looking for this to fix. Anyone ever dealt with this before? Thanks.
I have an 08' Rabbit and for the first time since I've owned it (about to hit 100k miles) I have an engine light on that I cannot turn off. The code reads
"PO442 - Evaporative Emission Leak -small leak" and I have no idea even where to start looking for this to fix. Anyone ever dealt with this before? Thanks.
1 - 20 of 21 Posts
Yes, cap is always first to check. Then those hoses that come from the evap. canister. I had several that were cracked and coming loose on my Ford. Was getting similar codes to check evap. system. I did end up spraying carb cleaner on the one valve as it was not closing fully. I sprayed the othe sensor as well as the hoses were putting off some sticky black gunk on everything.
Hey guys, thanks so much for your replies. I never thought of the gas cap, and before I got the engine light, I had a warning light come on that I had never seen before, I had to look in the owners manual to figure out what it was, and it was the gas cap light (didn't even know there was such a thing)
I guess my next question is that since the cap is not sealing well, should I just buy another cap? I'm assuming the seal on the plastic cap is not good anymore.
I guess my next question is that since the cap is not sealing well, should I just buy another cap? I'm assuming the seal on the plastic cap is not good anymore.
I never replaced the gas cap, just took it off wiped the seal down with a paper towel at the station and put it back on. When the hoses cracked I did replace them. Very hard and brittle due to heat I expect. They were attached to the EGR valve.
I had a similar situation with a 2007 Rabbit. I replaced the rubber seal on the gas cap, VW part number was 191-201-557.
Cheers,
Harold.
Cheers,
Harold.
I have had an evap leak for about three months. Fixed the gasket cover, changed spark plugs changed plug wires, replaced fuel filter and the light is still on and blinks sometimes throwing only one code now p300 which im guessing is a an 02 sensor the car has three of them and I do not even know here to start, Im exhausted and broke, I bought this car brand new replace transmission at 150k as it was leaking and could not tell due to it being sealed. etc.also replaced the gas cap and it seems to still have the same problem and thousands in repairs still. any knowledge on how to replace the sensor would be appreciated. I hope you find what is going on with yours. mine is a 2007.Hi,
I have an 08' Rabbit and for the first time since I've owned it (about to hit 100k miles) I have an engine light on that I cannot turn off. The code reads
"PO442 - Evaporative Emission Leak -small leak" and I have no idea even where to start looking for this to fix. Anyone ever dealt with this before? Thanks.
where is the evap cannister on the 07 rabbit?
Many thanks for the part number Harold.
I know they are expensive, but it sounds like you need a diagnosis from the dealer. Ask beforehand what they charge for a diagnosis. Good luck.I have had an evap leak for about three months. Fixed the gasket cover, changed spark plugs changed plug wires, replaced fuel filter and the light is still on and blinks sometimes throwing only one code now p300 which im guessing is a an 02 sensor the car has three of them and I do not even know here to start, Im exhausted and broke, I bought this car brand new replace transmission at 150k as it was leaking and could not tell due to it being sealed. etc.also replaced the gas cap and it seems to still have the same problem and thousands in repairs still. any knowledge on how to replace the sensor would be appreciated. I hope you find what is going on with yours. mine is a 2007.
When you replace or clean the gas cap it will take a drive cycle to clear 50 to 100 miles, if you have a ODB reader that can reset your codes, it may go away. I would only be worried if after resetting them it comes back.
I can reset the codes but if it does not go away after replacing the gas cap seal (I'll probably order one, gonna check price today) then I'll know there are evaporative lines somewhere that likely need replaced. That's when the troubleshooting begins I guess.When you replace or clean the gas cap it will take a drive cycle to clear 50 to 100 miles, if you have a ODB reader that can reset your codes, it may go away. I would only be worried if after resetting them it comes back.
Odanny,
If it's not the gas cap, then it may be the N80 valve. There are some threads here on that valve. I haven't done one, but if I recall correctly (from reading those threads), it is relatively easy to do.
Harold.
If it's not the gas cap, then it may be the N80 valve. There are some threads here on that valve. I haven't done one, but if I recall correctly (from reading those threads), it is relatively easy to do.
Harold.
Here's a link to a video on how to change the N80 (purge) valve: https://www.youtube.com/watch?v=RxAlS7DAeUA
@lyricals1 - have you tested the N80 on your 2007 Rabbit?
The evaporator canister looks like this: https://www.ecstuning.com/b-genuine-volkswagen-audi-parts/charcoal-canister/1k0201797b/It says it is in the rear of the car. I guess near the fuel tank, is there an access cover in the spare tire well?
@lyricals1 - have you tested the N80 on your 2007 Rabbit?
The evaporator canister looks like this: https://www.ecstuning.com/b-genuine-volkswagen-audi-parts/charcoal-canister/1k0201797b/It says it is in the rear of the car. I guess near the fuel tank, is there an access cover in the spare tire well?
Thanks so much for that Harold. I picked up a seal at the dealer without looking at the original, they sold me the wrong seal (it's double sided, mine is flat, and theirs seems to be a slightly smaller diameter.Odanny,
If it's not the gas cap, then it may be the N80 valve. There are some threads here on that valve. I haven't done one, but if I recall correctly (from reading those threads), it is relatively easy to do.
Harold.
I gave them the part number you provided and he told me that was for a VW Rabbit from the 70's (to some other year I cannot remember) and he sold me 1K0-201-557-A for the replacement, I'll head out there tomorrow for the right one (I hope!)
Sorry about that, but the part number was on the receipt for the gas cap seal I bought for my 2007 Rabbit, it is sort of double sided and matched what I took off. I figured since the 2008 is still a Mark V Golf, it would be the same for you. Hope the other one works out for you.Thanks so much for that Harold. I picked up a seal at the dealer without looking at the original, they sold me the wrong seal (it's double sided, mine is flat, and theirs seems to be a slightly smaller diameter.
I gave them the part number you provided and he told me that was for a VW Rabbit from the 70's (to some other year I cannot remember) and he sold me 1K0-201-557-A for the replacement, I'll head out there tomorrow for the right one (I hope!)
Cheers,
Harold.
No worries, he did not sell me the part number you gave me, but I'm going to have a look at it this time. The seal on my gas cap is so flat and thin that if the factory seal does have there double sided appearance (not sure how to describe it) then perhaps my seal just fell off and is missing. That's possible, but means that there would be 2 seals on the cap (double sided and flat), and that seems unlikely.
Just checked my gas cap again - there is only one seal, it has a C-shaped cross section instead of being a solid o-ring.No worries, he did not sell me the part number you gave me, but I'm going to have a look at it this time. The seal on my gas cap is so flat and thin that if the factory seal does have there double sided appearance (not sure how to describe it) then perhaps my seal just fell off and is missing. That's possible, but means that there would be 2 seals on the cap (double sided and flat), and that seems unlikely.
Maybe yours has deteriorated and only a part of it is left making it appear that it is a flat seal?
Cheers,
Harold.
Just saw that you were from Peoria, Lovely home town to Pabst Lots of memories there, and Detweiller Park where I spent some fun times in the mid-70's doing hill climb racing there in my MG, quite fun...(sponsored Event).No worries, he did not sell me the part number you gave me, but I'm going to have a look at it this time. The seal on my gas cap is so flat and thin that if the factory seal does have there double sided appearance (not sure how to describe it) then perhaps my seal just fell off and is missing. That's possible, but means that there would be 2 seals on the cap (double sided and flat), and that seems unlikely.
Well, we could not find a seal for that at the dealership , so I bought a new gas cap, normally $47 but he sold it to me for $36, I’ll put it on later tonight and see if it works.Just checked my gas cap again - there is only one seal, it has a C-shaped cross section instead of being a solid o-ring.No worries, he did not sell me the part number you gave me, but I'm going to have a look at it this time. The seal on my gas cap is so flat and thin that if the factory seal does have there double sided appearance (not sure how to describe it) then perhaps my seal just fell off and is missing. That's possible, but means that there would be 2 seals on the cap (double sided and flat), and that seems unlikely.
Maybe yours has deteriorated and only a part of it is left making it appear that it is a flat seal?
Cheers,
Harold.
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