Customer had leak coming from kitchen that damaged lower level ceiling. It only came about whenever the dishwasher was used. Landlord had pulled the dishwasher out and saw no signs and did not see anything coming from discharge line. There was an extender discharge line that was attached so it could reach the disposal and that’s where the leak was detected, right at the connection. Tightened up the connection and ran the dishwasher on quick cycle and saw that there were no more leaks. Charged diag fee.