C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

OBD II fault codes

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Old 10-20-2014, 01:57 PM
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2005 C230
OBD II fault codes

Hey guys. I've got a 2005 C230 Sport. I recently bought the Torque app and a bluetooth OBD II adapter. I ran the test and the following codes showed up. Any idea what the issues are? I tried to search online through the app with no luck. Thanks!
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Old 10-20-2014, 02:44 PM
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2005 C230
i should note that my c230 does not have the check engine light on. I just ran the test to make sure everything is on the up and up. Also, my vehicle went through a full pre-purchase inspection last week (i was thinking about selling it - not anymore) and they said the car is good except for the rear brakes are at 20% and my windshield washer pump is leaking.
Old 10-20-2014, 10:14 PM
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2003 W203 C230K
Maybe someone more knowledgable could input here, but P0456 may be a lose or broken gas cap.
Old 10-21-2014, 09:39 PM
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E63 AMG W211 & W203 Sport Pkg
usually it is due to the fuel filler neck pipe
Old 10-22-2014, 12:44 AM
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2005 C230K SS
Originally Posted by Preet
usually it is due to the fuel filler neck pipe
I agree...My 05 has never thrown a CEL the entire time I've owned it, so a couple days ago I had way too much time and nothing to do so I plugged in my code reader just for the heck of it, and there it was: p0456 (pending). Seems every 05 W203 will get this problem eventually. Ordering the filler neck from getmercedesparts
Old 10-22-2014, 12:55 AM
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2005 C230K(sold), Mk7 Jetta
Shiett.. I don't even want to check for codes now
Old 10-22-2014, 11:21 AM
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2001 C320 w/ Sprt Pkg
I'm afraid to check for codes. I have no CEL, but I sure as heck feel like they are in there, taunting me, waiting for me, ready to pounce....

The horror.
Old 10-24-2014, 10:12 PM
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E63 AMG W211 & W203 Sport Pkg
Originally Posted by RWDlifer
I agree...My 05 has never thrown a CEL the entire time I've owned it, so a couple days ago I had way too much time and nothing to do so I plugged in my code reader just for the heck of it, and there it was: p0456 (pending). Seems every 05 W203 will get this problem eventually. Ordering the filler neck from getmercedesparts
+1 i had to replace it on mine also with 80,000 km on it
Old 11-17-2014, 04:18 AM
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Part came in, installed a week ago and no more pending CEL. All readiness monitors reset withing a couple of days. Paid $380 shipped from MB Northlake NC (ebay store).

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