Anyone deal with this? I've looked at all my manuals (Hayens, Bible, '86 factory, & Motorbooks W124) and cannot find info on where and how to test for this error code. I've cleared the CEL and it's off for now.

Should I remove and inspect the pipe from the valve on the exhaust manifold?

 

found a thread on PeachParts

 

undo pcv pipe at the egr valve squirt alot of gumout carb cleaner let soak take some vacume line put it in pipe and blow till clear!

 

as I recall, the side on the exhaust is easy to unscrew but the pipe goes under the intake manifold. Would I need to unscrew that side too?

Thanks Roy

 

no leave the pipe at the intake alone. some how spray gumout into pipe let soak spray somemore take some vacume line,put it in pipe and blow the crudd into intake manifold,take off your intake from air cleaner to intake open butterfly(throttle) look down inside your a benz owner you can do it!!