mercedes/c-class/1994-2000

Mercedes 2000 c280, stuck in the limp mode.

 I have a Mercedes 2000 c280, stuck in the limp mode.  I replaced the conductor plate and the adapter sleeve.  I got codes p0715 and p0758. I then replaced the conductor plate and adapter sleeve again and all of the solenoids. I cleared the codes . It is still in the limp mode and the codes have reset and is showing p0715 and p0758.  I am at a loss.

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