Hi all,

A4 2004 1.9 TDI 160.000KM. Front Wheel Drive.

Sometimes all PRNDS indicator lights get on while driving( no flashing). Then after some time it turns to normal (display shows only the selected drive mode S, D or whatever.)

The error codes that were given are
18149 pressure adaptation limit reached
17134 shift solenoid A N88 malfunction -- intermittent

Is the problem TCM or hydraulic control unit or both or none?
Did anybody have these error codes before?

Thanks