Bosch Dishwasher Error Code F8

F8 on a Bosch dishwasher signals that the pressure sensor detected excessively low pressure during the final rinse portion of the cycle. The code appears after the programme has ended rather than interrupting the wash mid-cycle. It points to a restriction in water flow, most commonly caused by a blocked filter, a clogged sump, or a faulty pressure sensor. Cleaning the filter is the recommended first step in diagnosing this fault.

The dishwasher does complete its cycle before displaying F8, so it is not an immediate safety hazard. However, continuing to run the machine with a restricted filter or sump puts extra strain on the wash pump and may lead to inadequate rinsing, leaving detergent residue on dishes. It is best to clean the filter before running another cycle.

If cleaning the filter and sump resolves the issue, there is no parts cost at all. If the pressure sensor needs to be replaced, parts and labour together typically range from around $80 to $200 depending on your location and the service provider. Diagnosing the problem yourself before calling a technician can help reduce the overall cost significantly.

In most cases, yes. The most common cause is a dirty or clogged filter, which any homeowner can remove and clean by hand without tools. Twist out the cylindrical filter and lift out the flat coarse filter, then rinse both thoroughly under running water. If the error returns after cleaning, further inspection of the sump and pressure sensor may require some comfort with basic appliance disassembly.

A reset may clear the displayed code temporarily, but if the underlying cause such as a blocked filter or debris in the sump is not addressed, the F8 fault will return the next time the dishwasher runs a final rinse. Always resolve the root cause first, then reset the machine by cancelling the programme or cycling the power.