GE Dishwasher Error Code F148

F148 indicates that the control board has detected an open Thermal Cut-Out (TCO) in either the circulation motor or the drain motor. The TCO is a built-in safety device that permanently breaks the motor circuit when it overheats. This code means at minimum one motor has exceeded its safe temperature threshold and requires inspection or replacement.

No, you should not continue running the dishwasher while F148 is active. The TCO tripped because a motor reached an unsafe temperature, and running the appliance again without resolving the root cause could result in further damage to the control board or wiring. In some cases, a failing motor can pose a fire risk. The dishwasher should remain off until the affected motor is inspected and replaced if necessary.

Repair costs vary depending on which motor has failed and local labor rates. A replacement circulation or drain motor typically costs between $60 and $180 for the part alone. If you hire a technician, total repair costs including labor generally range from $150 to $350. Diagnosing the harness first is worthwhile since a wiring repair can cost significantly less than a full motor replacement.

A knowledgeable DIYer can perform the initial diagnostics, including checking the wiring harness for damage and inspecting the pump cavity for blockages. If the TCO itself has opened, the affected motor must be replaced, which involves disconnecting electrical connectors and unbolting the pump assembly. If you are comfortable working with appliance electrical systems and following proper lockout procedures, this is a manageable repair. Otherwise, a qualified technician is recommended.

Resetting the dishwasher by cutting power may temporarily clear the error code from the display, but it will not resolve the underlying problem. Because a TCO is a one-time device that does not reset when it cools, the open circuit will still be present when power is restored and the control board will detect F148 again. A lasting fix requires replacing the motor with the failed TCO.