Got the P0243 code on my 1998 E300D about 2 weeks ago. At first the car still ran fine, later lost some power. I searched this forum so I knew some of the suggested fixes. Went by the repair shop who checked with his computer than told me I needed to replace both the turbo wastegate and EGR transducers. I did not like his suggestion. Seems he just want to find the fastest fix with the highest chance of success, but at the cost of me footing unnecessary repair bills.

So I did the transducer swap myself, it was indeed easy after getting the instructions posted by the members here (and thanks to TMAllison and others). So far the code has not re-appeared and the car is driving fine.

So it appears the turbo waste gate transducer is bad. As I understand it, the EGR system is more tolerant of a bad transducer so I can get by for now. Have the following questions :

!) For people who did the transducer swap: how long before you experienced problem on the EGR system and what is the OBDII code for EGR malfunction?

2) Should I go ahead and replace the bad transducer now?

3) I searched fastlane could not find the transducer. What is that parts number and where is the best place to buy the transducer?

__________________
RH

16 GLC300
12 C250
98 E300D
89 300SE
84 300SD sold