C-230 Check Engine Light

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Richard Nelson - 29 Oct 2004 23:49 GMT

Yesterday I had the oil changed in my '97 C-230 and on the way home the CEL
came on. The code was: P0400 Exhaust Gas Recirculation Flow Malfunction. I
turned it off and today the light came on again with the code: P0410
Secondary Air Injection System Malfunction. My guess is that they
disconnected a hose or something but I didn't see anything after a quick
check under the hood. Any ideas on this? Thanks

-Dick

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AJDalton7 - 29 Oct 2004 23:56 GMT

There is a vac feed line that is common to the EGR and AIR switch-over-valves
. It is in front of the engine, under the plastic panel. It crosses from the
intake over to the passenger side. Check it out..

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