Bosch Dishwasher Error Code E:3000

E:3000 is a filling fault that occurs when the heating pump detects water in the sump but the flow sensor sends no impulses to the control board during the fill cycle. This conflict indicates the flow sensor, its impeller, or the wiring connected to it has failed. The dishwasher cannot accurately measure water volume and will stop the cycle until the fault is resolved.

The dishwasher will typically halt the wash cycle when E:3000 is active, so continued use is unlikely without clearing the fault first. Running the machine with a faulty flow sensor risks incorrect water fill levels, which can stress the heating pump and potentially cause water damage if fill control is compromised. It is best to diagnose and resolve the fault before resuming use.

A reset may temporarily clear the error code, but if the underlying fault with the flow sensor or wiring has not been corrected, the code will return as soon as the dishwasher attempts to fill again. Resetting is useful to confirm the repair was successful after fixing the root cause, but it is not a fix on its own.

Many cases of E:3000 are caused by a jammed impeller or corroded connector, both of which a DIYer comfortable with basic disassembly can address. Start by inspecting and cleaning the flow sensor and checking the wiring harness for damaged pins or loose plugs. If the reed switch itself has failed, the sensor assembly will need to be replaced, which is a more involved but manageable repair.

If only the wiring or connectors need repair, costs are minimal, typically in the range of a service call fee. Replacing a flow sensor assembly generally costs between $30 and $80 for the part, plus labor if a technician is involved. A full repair including a service visit could range from $100 to $250 depending on your location and the parts required.