When this happens, professional repair technicians often enter the (often labelled as "Customer Service Mode" or "Diagnostic Mode"). This hidden menu allows you to run diagnostic tests, read fault memory, and test individual components without disassembling the machine.
Turn the program selector to “Off” and unplug for 1 minute. Part 3: Bosch Serie 6 Oven – Service Mode Bosch Serie 6 ovens (HBA, HBG, HBF series) also have a service mode, often used to test the oven light, fan, heating elements, and temperature probe. Entering Oven Service Mode | Step | Action | |------|--------| | 1 | Ensure the oven is off and cool. | | 2 | Press and hold the “Info” button (sometimes labelled “i”) and the “Temperature” button simultaneously for 5 seconds. | | 3 | The display will show “Service Menu” or a code like “C01”. | | 4 | Use the rotary knob to scroll through tests (C01, C02, etc.). | bosch serie 6 service mode
Turn off. Press and hold “Finish In” and “Start/Pause” simultaneously. While holding, turn the dial to “Off” then to any program. Release buttons. The display shows “d01”. Important Service Mode Tests – Washing Machine | Code | Description | |------|-------------| | d01 | Door lock test (listens for click) | | d04 | Inlet valve test (cold + hot) | | d05 | Drain pump activation | | d06 | Motor rotation (drum will turn slowly – careful) | | d08 | Heating element (test resistance via display) | | d12 | NTC temperature sensor check | | d20 | Read fault code memory | Part 3: Bosch Serie 6 Oven – Service
For official Bosch manuals and spare parts, visit the Bosch Home Appliance support portal. This article is not affiliated with BSH Hausgeräte GmbH. | | 3 | The display will show
| Error | Appliance | Meaning | |-------|-----------|---------| | E:15 | Dishwasher | Water protection system activated – possible leak or float switch stuck | | E:24 | Dishwasher | Drain blockage or faulty drain pump | | E:09 | Dishwasher | Heater relay fault or calcified heating element | | F:18 | Washing Machine | Heating relay stuck – replace control board or heater | | E:30 | Washing Machine | Drain pump filter clogged or pump failed | | F:63 | Washing Machine | Motor tachometer signal missing – hall sensor issue | | C67 | Oven | Cooling fan runs continuously – probe short | | C71 | Oven | Temperature sensor open circuit |