Fisher & Paykel Dishwasher Error Code F6

The F6 code indicates a communications baud rate error between the dishwasher's main microcontroller and its motor control microcontroller. The two boards are unable to exchange data at a matching rate, which prevents normal operation. This can be caused by an incorrect baud rate on the motor control micro, consistently incorrect echo bytes, or a faulty electronic controller. Replacement of the electronic controller is the standard corrective action.

A dishwasher displaying F6 will generally not complete a wash cycle because the communication failure between controllers prevents normal operation. Attempting to run the appliance in this state is not recommended, as the motor control system is not functioning correctly. It is best to stop using the dishwasher until the fault is diagnosed and repaired.

Repair costs for an F6 error typically depend on the price of the replacement electronic controller and the labor involved. Parts alone can range from roughly $150 to $350 or more depending on the specific model, with total repair costs including labor generally falling between $250 and $500. Getting a quote from a certified technician before proceeding is advisable, as the cost may influence whether repair or replacement of the appliance makes more sense.

The F6 error is a controller-level communication fault that typically requires replacing the electronic controller, which is a job that involves handling sensitive electronic components. Knowledgeable DIYers comfortable with appliance electronics may be able to source and install a replacement controller, but most homeowners will benefit from having a qualified technician perform this repair to avoid further damage.

A power reset may temporarily clear the F6 code, but it is unlikely to resolve the underlying baud rate communication fault if the electronic controller is defective. If the code returns after a reset, the controller will need to be inspected and most likely replaced. A reset is worth attempting as a first step, but should not be relied on as a permanent fix.