I have been getting a P0243 CEL. I have swapped transducers with no change. I noticed something odd that might be the reason for my problem..... On the EGR Transducer it seems that the rubber line that goes from the EGR is connected to the "OUT" nipple on the transducer. The other nipple is connected to vacuum....The bottom nipple is connected to the hose with the filter on the end.....

is this the correct setup? I noticed on the wastegate transducer, it is connected with the vacuum line and filtered vacuum output connected to the top two nipples and the wastegate rubber line is connected to the bottom of the transducer....

So my questions are, which is the correct setup? If somehow these were connected wrong could it fry the transducer? Could this be the reason for a P0243 CEL? Just want to cover all my bases before I start swapping parts... THANKS!

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2005 SL65
1999 E300
1995 E300
1994 SL320
1988 560SL
1987 300TD
1982 300D
1955 300SL