P0455 DTC on 01 S430 - Mercedes-Benz Forum

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post #1 of 3 (permalink) Old 05-05-2009, 08:43 PM Thread Starter
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Question P0455 DTC on 01 S430

Hi everyone,

Working on a check engine light with a p0455 dtc. No need to explain the code as I am a 13 yr Master Tech. Just don't have a MB scan tool and smoke machine in my garage. Other than disconnected hoses, are there any other "common" issues generating this trouble code. Fuel cap and seal appear ok, can't smell fuel, or see any obvious hoses disconnected. Suspecting a vent valve/solenoid or purge valve issue but just doing off past experiences. Any one with insight on this issue??
Thanks in advance!
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post #2 of 3 (permalink) Old 05-05-2009, 10:09 PM
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MB's don't like to be topped off, the canister may be shot, but flip the gasket on the fuel cap and clean the purge valve, those are the most common for it. Have heard of the hose nipple cracking on the canister, so check that, although as you know usually you can smell fumes on that one.

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post #3 of 3 (permalink) Old 05-11-2009, 08:14 PM Thread Starter
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Thank you for the input!

Anyone else have this issue and the repair??
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