Bosch dishwasher noisy

[kev25v6]

I have a Bosch dishwasher that is very noisy while running a wash. It fills and pumps out fine and the wash is still good but it’s just got noisy during the cycle. It quietens down when it’s draining though. Any ideas on what it could be?
https://share.icloud.com/photos/06Jv5NOBOfSl3DZSPnHk9vnSg

 

[YorkshireMidge]

If it's during the wash cycle, the first place to look will be the circulation pump if you've had the machine a few years. If you want an idea what can go wrong, have a look at what happened to ours which is a Siemens but it's pretty much identical to Bosch machines of the same era and the same pump was shared across both brands. As you can see, not only did the impeller completely fall apart, but the bearings were shot too - and the early signs of either fault would likely be increased noise.

Don't know what model your machine is but if it is the pump, they aren't cheap as they usually incorporate the heater too. I got mine from Germany and I think it was around 95 euros. In the UK, the same pump was anything up to £155.