Jenn-Air Dishwasher Error Code E:18

E:18 means the dishwasher's flow sensor detected that water is entering the tub too slowly or not at all. The control board monitors fill rate during each cycle, and when incoming water falls below the required threshold, this code is triggered. The dishwasher will wait briefly for supply to normalize, and if it does not, the unit will drain and stop the cycle.

A reset may temporarily clear the code, but it will return if the underlying cause is not addressed. To reset, turn off power to the dishwasher at the circuit breaker for a few minutes, then restore power. If the water supply issue has been corrected, the code should not reappear on the next cycle.

If the fix is as simple as opening the supply valve or straightening a kinked hose, there is no parts cost involved. Replacing a water inlet valve typically costs between $30 and $80 for the part, with labor adding $100 to $200 depending on your area. A flow sensor replacement is in a similar range, and a full diagnosis by a technician usually runs $75 to $150 before any repairs are made.

Start by confirming the water supply valve is fully open and that the inlet hose is not kinked. Next, check whether your home's water pressure is normal by running a nearby faucet. If supply and pressure are fine, inspect or clean the inlet valve screen for sediment buildup. If those steps do not resolve the code, the inlet valve or flow sensor may need to be replaced.

The dishwasher will not complete a wash cycle while E:18 is active, so there is no functional risk in attempting another cycle after checking the supply. However, repeated failed fill attempts can put unnecessary strain on the inlet valve over time. Address the root cause before running regular cycles.