Haier Dishwasher Error Code LED1:1 LED2:1 LED3:0 LED4:1 LED5:0

This LED pattern indicates an open circuit fault in the temperature sensor system. The dishwasher's control board is unable to receive a signal from the temperature sensor because the circuit path is broken somewhere between the sensor and the board. The appliance will not operate normally until the fault is diagnosed and the open circuit is repaired.

No, you should not run the dishwasher while this error is active. The temperature sensor open circuit means the control board cannot monitor water temperature, removing a key safety control over the heating element. Operating the appliance in this state could result in overheating or ineffective wash cycles, and may cause further damage to other components.

Repair costs vary depending on what is causing the open circuit. If the fix is a reseated connector or cleaned terminal, there may be no parts cost, though a service call from a technician typically runs between $75 and $150. If the temperature sensor itself needs replacement, parts generally range from $15 to $60 depending on the specific model, plus labor. Wiring harness replacement tends to be more labor intensive and can push total repair costs into the $150 to $300 range.

Start by checking that all connector plugs in the sensor circuit are firmly seated and free of corrosion. Next, use a multimeter to measure resistance across the temperature sensor terminals and check for continuity between the heater resistor terminals. If the sensor shows infinite resistance or any wiring segment shows no continuity, the faulty component will need to be replaced. If you are not comfortable using a multimeter or accessing internal components, a qualified technician should perform the repair.

A simple power reset will not permanently clear this code because the fault condition, the open circuit, is still physically present in the wiring or sensor. The error will return as soon as the control board runs its diagnostic check after restart. The underlying open circuit must be located and repaired before the error code will clear and stay clear.