Good morning my name is ***** ***** I will assist with your query.
E14 is a flow sensor fault, this is the sensor which measures how much water enters the dishwasher.
The part is around £20, however most likely will require an engineer to come out to fit it as it requries the stripping down of the dishwasher.
If you provide me with your postcode, I can recommend an engineer in your area.
I would suggest you use Fallen who can be contacted on 1300 762 260 their website is here http://www.fallonsolutions.com.au/appliance-repairs/dishwasher-repairs-brisbane