Fisher & Paykel Washer Error Code Err 105

Err 105 indicates a communication failure between the motor control module and the display PCB. The two boards exchange data signals continuously during a wash cycle, and when that link is lost, the washer stops and displays this code. The fault can originate in the wiring harness connecting the boards or in one of the boards themselves. Diagnostic work begins by checking the harness between connector CN8 on the display PCB and connector P324 on the motor control module.

No. The washer halts operation when Err 105 is triggered because the motor control module and display PCB can no longer coordinate safely. Running the machine in this state is not recommended, as the motor cannot receive proper control signals. The fault should be diagnosed and resolved before resuming normal use.

Repair costs vary depending on the root cause. If only the harness needs replacement, parts and labor typically fall in the lower range, often between $75 and $200. If a control board such as the display PCB or motor control module requires replacement, costs can range from $150 to $400 or more depending on parts pricing and labor rates in your area. Getting a diagnostic quote from a technician before committing to board replacement is advisable.

A knowledgeable DIYer can inspect and reseat the wiring connectors at CN8 and P324, and test the harness for continuity with a multimeter. If the connectors are secure and the wiring is intact, diagnosing and replacing a faulty control board typically requires more technical confidence and the right replacement parts. If you are not comfortable working with electronic components inside the washer cabinet, a qualified appliance technician is the safer option.

A power reset may temporarily clear the error code, but if the underlying wiring or board fault is still present, Err 105 will return as soon as the washer attempts to operate. A reset is a reasonable first step to rule out a transient glitch, but a persistent Err 105 requires physical inspection of the harness and control boards.