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Old 02-10-2006, 03:57 PM   #1
Calgary98TI
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Default Error Code P0455

I did a scan for the CEL and came up with an error code of P0455 Evaporative Emission System Leak Detected. Does anyone know any further information regarding that system? Any help would be appreciated. Forgot to add OBD II

Thanks
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Old 02-10-2006, 05:04 PM   #2
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Hoses on charcoal canister and/or expansion tank.

Could also be (but is easy enough to check) the fuel cap is loose. If so, tighten, and the light should re-set itself.

Since you have the tool, check the cap, re-set the lights, and see if the same code pops up again.
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Old 04-09-2014, 05:58 AM   #3
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Ha! Way old thread.

Seems like I am doing a bunch for my ti lately. After repairing the Secondary Air Pump last weekend, I had another engine code pop up. P0455. I suspect it may be because I used silicone vacuum hoses, not the more rigid OEM vacuum hoses as original. I bet they are collapsing under vacuum load. I recall one of the longer ones was going under where the fuel filter is located and perhaps that's a contributing factor. .

So, I'll pull the intake manifold off to gain better access for my hands. I installed the hoses when I had the motor out of the car. Way easier then, just used the wrong hoses...

I'll also start looking for the location of a charcoal canister on my 97. I remember my 95 had one. Don't recall seeing one on my 97

If anyone has anymore recent experiences with P0455 codes, I'd like to read about them. Not very much about the codes on multiple forums.

Thanks!
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1998 318ti Sport - "Cali" Schwartz II/Schwartz sport interior, Cali top
1998 318ti Sport - "Max" Schwartz II/Schwartz sport interior, S52
1997 318ti Sport - "Tiny" Schwartz II/Schwartz sport interior
1995 318ti Active - "Blanca" Alpineweib III/Schwartz leather interior

Other Current Bimmers: 2006 530i / 2000 2.3L Z3 / 1997 1.9L Z3 / 1999 540it

1997 318ti Sport - "Huera" - RIP
1995 318ti Active - RIP
1995 318ti Sport - "Tiny" Sold
1994 325i Sedan - "Jade" - Sold
1991 318ic - "Bert" - Sold
1985 635csi sold
1984 533i "Max" Sold
1984 318i sold

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Last edited by BlackBMWs; 04-09-2014 at 06:15 AM.
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Old 04-09-2014, 12:02 PM   #4
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Charcoal canister is by the fuel filer behind the rear seat side panel.
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Old 04-09-2014, 03:10 PM   #5
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Default Error Code P0455

Thanks J!m! I assume access is under the car like you'd access the fuel filter or by the rear wheel well. I see there are references to purge and vent valves being defective. I'll seek to locate those as well.

http://www.realoem.com/bmw/showparts...54&hg=16&fg=10
http://www.realoem.com/bmw/showparts...41&hg=16&fg=10

Here's some additional information I came across as well:

http://repairpal.com/OBD-II-Code-P0455
http://engine-codes.com/p0455.html

Thanks again J!m!
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1998 318ti Sport - "Cali" Schwartz II/Schwartz sport interior, Cali top
1998 318ti Sport - "Max" Schwartz II/Schwartz sport interior, S52
1997 318ti Sport - "Tiny" Schwartz II/Schwartz sport interior
1995 318ti Active - "Blanca" Alpineweib III/Schwartz leather interior

Other Current Bimmers: 2006 530i / 2000 2.3L Z3 / 1997 1.9L Z3 / 1999 540it

1997 318ti Sport - "Huera" - RIP
1995 318ti Active - RIP
1995 318ti Sport - "Tiny" Sold
1994 325i Sedan - "Jade" - Sold
1991 318ic - "Bert" - Sold
1985 635csi sold
1984 533i "Max" Sold
1984 318i sold

BMWCCA #160411

SUPPORT 318ti.org! CLICK THE LINK ABOVE!
Hosting a forum like this is not free. 318ti.org is one of the best BMW forums on the web because it is member supported, not vendor supported. The cost to become a Supporter is a nominal $10.00... A YEAR! DO IT! NOW!

Last edited by BlackBMWs; 04-09-2014 at 03:59 PM.
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Old 12-16-2014, 10:30 AM   #6
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I know this old but I just wanted to share with the code 455 of my 1998 318ti. I found a broken breather line at the left side tank, see the attachment with the arrow pointed and encircled. Troubleshoot; I plugged up both side but I cannot recommend this will be permanent fix until I can get the part. I will try to contact BMW but I doubt if they sell only that part instead they could sell me the tank itself. You need the breather tube to pass air from the other side of the tank. So far after resetting the failure code (455), it haven't trigger yet. I am planning to drill out the broken connector of the tank (plastic) then I replace with plastic fitting and bond with glue then connect to the hose. There are some glue that hold at least 90 PSI and can handle fuel and oil. I will up-date you guys if this thing works.
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Old 12-17-2014, 02:24 AM   #7
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On my 99' it ended up being the fuel tank breather valve next to the secondary air pump in the engine bay. It was stuck closed, not allowing the pressure of the system to escape after it ran the test. Shot it full of brake cleaner and it started working like it is suppose to.
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Old 10-18-2018, 03:02 AM   #8
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Super old thread, buti just started having a strange issue with my fuel breather valve. If i have the electrical connection plugged in the car runs really bad. On throttle it wont move at all. If i have it unplugged it runs fine. Any problem running with it unplugged?


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