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Old 09-10-2002, 09:26 PM
suginami suginami is offline
Join Date: Dec 2001
Location: Southern California, U.S.A.
Posts: 8,508
This seems to be a very common fault code on 93-95 W124's with the M104 engine.

The upshift delay valve is on the firewall behind the master cylinder. It has a black electrical wire and a green vacuum line going to it that connects to the transmission.

The part is cheap, less than $30, if I remember correctly.

You can replace the part and make sure the vacuum line isn't plugged up.
Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".
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