Whirlpool Dishwasher Error Code 6-8

Error code 6-8 signals an electrical problem in the water softener regeneration valve circuit. This code applies only to Whirlpool dishwasher models with a built-in water softener. Possible causes include a loose wiring connection, an open solenoid coil, a blown fuse in the circuit, or a failed drive circuit on the control board. Power must be disconnected before performing any diagnostic checks.

The dishwasher may still run basic wash cycles while displaying this code, but the water softener system will not function correctly without a working regeneration valve. Over time, this can allow mineral hardness to affect wash performance and potentially cause scale buildup. It is best to address the fault before extended continued use.

Resetting the dishwasher by unplugging it or cutting power may temporarily clear the displayed code, but the underlying electrical fault will cause it to return once the control attempts to operate the regeneration valve again. A proper repair of the faulty component or connection is required to permanently resolve the code.

A knowledgeable DIYer can perform some of the diagnostic steps, such as inspecting wiring connectors for looseness or corrosion after unplugging the dishwasher. Resistance testing of the Regen valve solenoid with a multimeter is also within reach for someone comfortable with basic electrical testing. However, if the fault points to a failed solenoid or control board, those component replacements may require more technical skill and familiarity with dishwasher disassembly.

Repair costs depend on which component has failed. Wiring repairs or connector fixes are generally low cost, often falling in the range of $50 to $150 for a service call. A replacement Regen valve solenoid typically adds parts costs in the range of $30 to $80. A control board replacement is the most expensive scenario, with parts and labor often ranging from $200 to $400 or more depending on the model.