Sharp Dishwasher Error Code E6

E6 on a Sharp dishwasher indicates an open circuit in the thermal sensor, which monitors water temperature. This means the control board cannot receive a temperature signal from the sensor. The code only appears during the factory diagnostic mode, not during standard wash cycles. It points to a failed thermistor, broken wiring, or a disconnected connector.

Since E6 only appears in factory diagnostic mode and not during normal operation, your dishwasher may still run regular cycles. However, a non-functioning thermal sensor means the appliance cannot accurately monitor water temperature, which could affect wash performance and heating safety. It is best to have the sensor inspected and repaired before relying on the dishwasher for regular use.

If the fix is simply reseating a connector or cleaning corroded terminals, there may be little to no parts cost, though a technician service call typically runs in the range of $75 to $150. If the thermal sensor itself needs replacement, parts can range from $20 to $80 depending on availability, with total repair costs including labor generally falling between $100 and $250. Wiring harness repairs may fall somewhere in between depending on the extent of the damage.

Start by checking the inlet water temperature as an initial diagnostic step. Then inspect the thermal sensor wiring harness and connector for visible damage, corrosion, or loose connections. Use a multimeter to test the thermistor for continuity; an open circuit reading means the sensor needs to be replaced. If the wiring and connectors are intact, replacing the thermal sensor is typically the necessary repair.

A reset may temporarily clear the code from the diagnostic display, but it will not resolve the underlying open circuit in the thermal sensor. The code will return when the diagnostic mode is run again as long as the sensor or its wiring remains faulty. A proper repair, either fixing the wiring or replacing the sensor, is required to clear the fault permanently.