The top oven causes the back gas ring on the left to vibrate and it gets worse. This is a new cooker...

buy new ring. if grill and oven work, the ring shorted. get a new 1.lol.

Have you checked the exhaust fans within the oven? These can make a lot of noise if something has come lose. They should be located at the top of your oven or on the back. I would check that.
Good luck

you need to check the pipe that take gas in to rings , and check the adjuster button .... where you live may be i can help you

I AM NOT AN ELECTRICIAN ! But i have had the same problem of the oven and the back right ring not working and have found the cause of this. For some reason there is a thermal fuse running inline on a live wire inside the cooker if you feel competent yourself in replacing this fuse you will save a good deal of money on call out fees, here is how to do it. SAFETY is the crucial, First of all isolate the power source to the cooker, pull out cooker so you can get access to the back of the cooker, remove the 9 screws ( i think there is 9) to remove the back plate from the cooker, this is quite heavy because there is a small block of concrete fastened to the bottom left hand side of the back plate, looking at the inside of the cooker on the right hand side you will see a white wire which has been secured via a small screwed clip, this wire has a transparent sleeve covering the thermal fuse, remove the sleeve by sliding it up or down the wire, check the fuse by with a meter just to be sure, if it is blown cut the fuse out. replace fuse the same way it was fitted. replace the sleeve and fit the back on the cooker SAFETY FIRST switch on power and try oven and back ring, mine works fine. like i said at the start i am not an electrician, but i can not understand why there is a thermal fuse running inline to the oven which is linked the back right hob. all the best folks Hobbo from Chess.

If your oven has timer and it is flashing AUTO then you need to reset it to manual for it to work.
If no timer then it could be a faulty door micro switch, located at the front left side..\Hope this helps, please leave feed back.
Thanks

there usually is a unit at the back that is the ignitor i don't know on this model but it should have a fuse fitted to the igniter, its usually 3amp, check and see if it has blown this fuse. check it with another fuse and see if there is still a problem the fuse will blow if it gets a back feed. this could be form the switch that you push.

It sounds exactly the same as I am experiencing on my oven of the same model. My theory is that the full flame gas is controlled by a thermostat, and that this has broken hence why the oven only stays on preheat. This will be a matter of a replacement part. Most likely the thermostat is a bi-metal strip that, because it has heated and cooled so many times in it's life it has simply finally given up. Try searching online for the correct part and get a corgi registered fitter or another suitably qualified fitter to come and replace it.

some older ovens did use one side just as a "bread warmer"...only way to tell for sure is to check if there is a burner below the left side

The left hand oven needs a new flame failure device fitted , it is a normal oven not for slow cooking . This repair can only be carried out safely by a registered Gas Safe engineer . Visit WWW.gasSafeRegister.co.uk or ring freephone 0800 408 5500 to find one in your area.