Fisher & Paykel Dishwasher Error Code E8

E8 is a solenoid fault code that appears when the controller detects abnormal current on one or more solenoids. Sub code 02 means under-current, indicating a possible open circuit or disconnected coil. Sub code 03 means over-current, pointing to a short circuit within the solenoid wiring or coil. The affected solenoids can include the detergent diverter, fill valve, rinse aid dispenser, or water softener.

You should not continue running the dishwasher while E8 is active. An over-current condition on a solenoid indicates a short circuit that can damage the controller or wiring harness if the machine is repeatedly cycled. The dishwasher may also fail to fill or dispense detergent correctly, leading to poor wash results or water flow issues.

Repair costs depend on which component has failed. Replacing a single solenoid typically falls in the range of $50 to $150 for parts, with additional labor costs if a technician is involved. If the controller requires replacement, costs can rise significantly, often ranging from $150 to $400 or more depending on the model and labor rates in your area. Getting a diagnosis first helps avoid unnecessary parts replacements.

Some causes of E8 are accessible to a confident DIYer. Start by inspecting the wiring harness connectors at each solenoid and at the controller for corrosion, loose pins, or visible damage, and reseat any suspect connectors. If a solenoid coil has failed, replacing it requires disconnecting the dishwasher from power and accessing the internal components, which is manageable with basic tools and comfort working around appliance wiring. A failed controller is more complex to diagnose and replace.

A reset may temporarily clear the code, but E8 will return if the underlying solenoid or wiring fault is still present. Resetting without fixing the root cause is not a solution and can mask the problem while the fault continues. The correct approach is to identify and repair the faulty solenoid or wiring before returning the machine to normal use.