Ok I have tried the fixes I have found relating to EGR codes on the 606 engine, the EGR valve is opening and the flap closing but I am still getting the codes. I have checked and replaced vacuum hoses too I am at a loss....any suggestions??

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Keith Schuster
2006 E350 98K miles
2013 Ford Explorer 15K miles

What codes?

I had a nightmare of a time chasing down the cause of a P0200 on my 97 E300D. I replaced all vac lines, cleaned flappers, confirmed proper operation, but still got the code.

I discovered that a wire was intermittent on the micro switch of the crossover pipe flapper. Repaired the connection and I was good to go.

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Mark in MA
05 MB E320CDI 402k Granite Grey Metallic
05 MB E320CDI 267k Black
05 MB E320CDI 232k White
05 MB E320CDI 209k Tectite Grey
99 Dodge 2500 Cummins 5sp 148k
62 Jeep CJ-6 120k

Yea I had that on the flapper valves however I have been chasing P0400 EGR flow codes for some time now. As stated I replaced both vacuum transducers and cleaned EGR, flapper, and any other valve and still get the code. I need to check continuity on the connector at the EGR valve to make sure none of the wires at the connector are broken internally. other than that I am at a loss. I guess its off to the indy shop.

__________________
Keith Schuster
2006 E350 98K miles
2013 Ford Explorer 15K miles

When I would disconnect the vac line between IM and the transducer on the driver's side fenderwall, I would immediately get a P0400.

Something to look at.

__________________
Mark in MA
05 MB E320CDI 402k Granite Grey Metallic
05 MB E320CDI 267k Black
05 MB E320CDI 232k White
05 MB E320CDI 209k Tectite Grey
99 Dodge 2500 Cummins 5sp 148k
62 Jeep CJ-6 120k

Thanks that vacuum hose is fine too.

__________________
Keith Schuster
2006 E350 98K miles
2013 Ford Explorer 15K miles

shoe - did you ever find the source of the P0200 code?

__________________
Charlie

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'66 VW 1300 96K miles
'97 E300D 239K miles
'85 300D 203K miles (sold Sep 2012)