GE Dishwasher Error Code F98

F98 means the dishwasher's control board detected that the sump did not drain properly, based on feedback from the turbidity sensor. The sump is the reservoir at the bottom of the tub where water collects before being pumped out. The code points to the drain pump, drain path, or turbidity sensor as the source of the problem. Checking for visible standing water in the tub and inspecting the sump filter for clogs is the best starting point.

Running the dishwasher with F98 active is not recommended. The code indicates standing water remains in the sump, and continuing to operate the machine can submerge the heating element and circulate contaminated water over dishes. It also risks overworking or burning out the wash pump motor. Clear the fault, confirm the sump has drained, and resolve the underlying cause before running another cycle.

Yes, a fouled or failed turbidity sensor can cause F98 even when the drain pump is functioning and the sump has physically drained. The sensor monitors water clarity and sump conditions to confirm drainage, so inaccurate sensor readings can trigger a false fault. Before replacing the sensor, rule out an actual drain restriction by visually confirming the sump is empty. If no water is present and F98 persists, testing or replacing the turbidity sensor is the next step.

Start by removing and cleaning the sump filter and filter screen at the bottom of the tub. Inspect the drain pump impeller for debris by accessing it through the sump area. Check the drain hose for kinks and confirm it has a proper high loop or air gap installation. If the pump runs but water does not move, the drain pump motor likely needs replacement. If the sump is empty but F98 still appears, the turbidity sensor may need to be tested or replaced.

If the cause is a clogged filter or drain hose, the repair costs nothing beyond your time. A replacement drain pump motor typically costs between $40 and $90 for the part, and a professional technician will add a service call fee of $75 to $150 on top of labor. Turbidity sensor replacement is generally less expensive than a pump, usually under $50 for the part. Total professional repair costs for a failed drain pump typically land in the $150 to $280 range depending on your market.