Bosch Error Codes
& Diagnostics

CALC Coffee Machine The CALC indicator on Bosch coffee machines alerts that limescale has accumulated to the point where a descaling cycle is required. This is a maintenance reminder, not an error. Low View details → EMPTY DRIP TRAY Coffee Machine The EMPTY DRIP TRAY message indicates the drip tray and/or coffee grounds container is full. Empty both to continue using the machine. Low View details → Error 1 Coffee Machine Error 1 on Bosch built-in coffee machines indicates a water system pressure problem. The pump cannot build sufficient pressure to push water through the coffee grounds for extraction. Medium View details → Error 2 Coffee Machine Error 2 on Bosch coffee machines indicates a temperature regulation failure. The machine cannot heat water to the proper brewing temperature, resulting in lukewarm coffee. Medium View details → Error 3 Coffee Machine Error 3 on Bosch coffee machines indicates the water pump has malfunctioned. No water can flow through the system, and the machine produces a loud pump noise without output. High View details → Error 5 Coffee Machine Error 5 on Bosch coffee machines indicates the built-in grinder has a fault. Beans are not being ground properly, resulting in no fresh coffee or inconsistent grind quality. Medium View details → Error 6 Coffee Machine Error 6 on Bosch coffee machines indicates the temperature sensor has malfunctioned. The machine cannot regulate brewing temperature accurately and may refuse to start brewing. Medium View details → Error 7 Coffee Machine Error 7 on Bosch coffee machines indicates the grinder is physically blocked. Unlike Error 5 (general grinder fault), Error 7 specifically indicates a mechanical jam in the grinding mechanism. Medium View details → Error 8 Coffee Machine Error 8 on Bosch coffee machines indicates the brewing unit is jammed or the grinder motor cannot operate. The brewing mechanism has stuck in a position and cannot complete its cycle. High View details → FILL BEANS Coffee Machine The FILL BEANS message on Bosch coffee machines indicates the bean hopper is empty or the machine cannot detect beans. Simply refill to resume fresh-ground coffee. Low View details →