My 15 month old kenwood dishwasher runs for 30 second then alarms out

The code Indicates a blockage somewhere in the outlet path . it can also be in the nozzles on the spray arms. Check that they are not blocked by bits of food. It doesn’t have to be a complete blockage to get the code . You can try back flushing the drain by attaching a water hose to the drain hose and pushing water backward trough the system . This can dislodge the blockage. Hope this helps