GE Dishwasher Error Code F37

F37 means the control board detected a diverter feedback error. The diverter routes water to different wash zones, and the board monitors its position through a red sensor plug. F37 fires when the sensor reports no movement, unexpected movement, or when water level is too low for the diverter to function. Start by checking that the red diverter sensor plug is seated firmly and verify the dishwasher is filling with enough water.

Running the dishwasher with an active F37 code is not recommended. The diverter controls which wash zones receive water, so if it is stuck or not responding, dishes will likely not be cleaned properly and water may not reach all areas of the tub. Continuing to run cycles in this state can also stress the circulation pump. Resolve the error before returning to normal use.

If the diverter position changes every 5 to 15 seconds while you hold a single wash area selection during the Operate Loads circulation pump test, both the diverter and the DC harness are faulty. The harness is sending or receiving incorrect signals that cause the diverter to keep repositioning instead of staying locked on the selected zone. Replacing only the diverter without also replacing the DC harness in this scenario will not resolve the F37 code.

Begin by reseating the red sensor plug on the diverter and checking that the dishwasher is filling to the correct water level. If those checks pass, run a circulation pump test using the Operate Loads function while watching the wash zone selections through the clear door. If the diverter position never changes across all selections, replace the diverter. If the position keeps cycling every 5 to 15 seconds while holding a single wash area selection, replace both the diverter and the DC harness. The harness replacement requires some comfort working around wiring inside the appliance.

If the fix is just reseating the diverter sensor plug or correcting a water fill issue, there is no parts cost. Replacing the diverter assembly typically costs between $40 and $120 for the part depending on the specific model. If both the diverter and the DC harness need replacement, budget an additional $20 to $60 for the harness. Professional labor for this repair generally runs $100 to $200 depending on your area, making it a reasonable DIY repair for someone comfortable working inside the appliance.