Dishwasher and method for operating a dishwasher

A household dishwasher, comprising:

• a first hydraulic arrangement;
• a second hydraulic arrangement;
• a pump device operated by a pump current for supply of a washing liquor to the first hydraulic arrangement and to the second hydraulic arrangement;
• a first spray device connected to the first hydraulic arrangement for providing a first washing zone;
• a second spray device connected to the second hydraulic arrangement for providing a second washing zone;
• a third spray device connected to one of the first and second hydraulic arrangements for providing an intensive washing zone, said third spray device having a first switching state in which the third spray device is isolated from the one of the first and second hydraulic arrangements, and a second switching state in which the third spray device is connected to the one of the first and second hydraulic arrangements;
• and
• a control device configured to determine a current switching state of the third spray device as a function of a difference between the pump current when washing liquor is supplied to the first hydraulic arrangement and when washing liquor is supplied to the second hydraulic arrangement, the control device configured to determine the current switching state of the third spray device by detecting a first pump current when the first hydraulic arrangement is supplied with washing liquor, detecting a second pump current when the second hydraulic arrangement is supplied with washing liquor, and determining a delta value as a difference between the first pump current and the second pump current, the control device further configured to compare the delta value with a predefined threshold value, with the delta value being greater than the threshold value in the first switching state of the third spray device and smaller than the threshold value in the second switching state of the third spray device.