Bosch sgs46e02/gb/75

True, could be the inlet valve. Usually it`s the impeller jug that fails part number 00424099 about 22 quid ( rear of d/washer l/h/side corner is where the blighter is located, round white thing with 2 nozzles and 2 or 3(? from memory) plugconnector wires going to it ). Symptom is set on any programme, machine makes pump out noise then begins to fill. Can fill for, say 10 secs or can fill to what looks like the right level BUT the wash motor does not start up so gives the impression the wash motor is toast when it isn`t. The impeller jug is a water flow over time impulse counter that tells the pcboard when to start the wash motor up ( in other words it electronically takes the place of a electromechanical pressure switch which actually seldom go wrong – though it takes the likes of Bosch to come up with something that does commonly go wrong! ) the problem is they never look as though they have failed in any shape or form but they have. Do not think too much over this just change the impeller jug and it should cure your fault. ( of course as other pointers it could be the microproccessor but that would be highly unlikely or indeed the emergency red float o/flow is blocked up or its semi transparent hose to the sump which is fairly common on an old machine- sgs series is an old machine! ).

if the water flows in and then aborts and pumps out with the light on then change impellor jug as Andyjawa pointed out

done lots of them very common failure

ir check leads from impellor jug had one where mice ate the cables

Dave

if you watch the left hand side once the cover is off you should see water coming in, then it should abort

if no water comes in at all then you may have a faulty valve. the impellor jug detects water, if no water enters it cant detect anything

Dave

very likely impellor jug

in order
1 impellor jug
2 cable from impellor jug to programmer
3 main board, programmer

Dave