Vision Washer Error Code Er:05

Er:05 indicates an NTC thermistor fault caused by either a break in the wiring circuit or a damaged temperature sensor. The NTC monitors water temperature and sends resistance-based signals to the control board. When the circuit is open and no signal is received, the washer stops and displays Er:05. The fault must be corrected by repairing the wiring or replacing the sensor before the machine will operate normally.

Resetting the washer may temporarily clear the displayed code, but it will return as soon as the control board attempts to read the NTC sensor again and finds no signal. The underlying problem, either the broken wire or the failed sensor, must be physically repaired or replaced to permanently clear Er:05.

If only a wire needs to be repaired or a connector replaced, the cost is typically low, often in the range of a service call fee plus minimal parts. If the NTC thermistor sensor itself has failed and needs replacement, parts costs are generally modest, with total repair costs including labor typically ranging from $75 to $200 depending on your location and the technician's rates.

Start by inspecting the wiring harness connected to the NTC thermistor for any visible breaks, damaged insulation, or loose connectors. If the wiring appears intact, use a multimeter to test the NTC sensor for continuity and resistance. A reading showing an open circuit means the sensor has failed and needs to be replaced. Repair any identified cable breaks or replace the NTC to resolve the fault.

You should not attempt to run the washer while Er:05 is active. Without a functioning temperature sensor, the control board cannot monitor water temperature, which means the heating system could operate outside safe parameters. The machine is designed to halt operation when this fault is detected, and bypassing it is not recommended.