I searched the forums but couldnt find the answer:

I used my home-brew LED tool to read the fault code off my 1991 300E, and came up with code 9 or "Current to Electro-hydraulic actuator". Does this mean my EHA is bad? Or does this mean that a sensor or something that sends the current is bad. I realize this code could be inconclusive to the problem, but i was hoping there was a common problem that made the engine throw this fault code.

Please help as I've just spent a lot of money on repairs and would like to be able to do this one myself if I only knew that the problem was.

THANKS!
-E

EDIT: Just replaced the oxygen sensor 100 miles ago, and have checked over the installation 100 times.

__________________
I love my cars to death but my wallet sure doesn't.