Viking Dishwasher Error Code E:18

E:18 on a Viking dishwasher indicates a low voltage error, meaning the control board has detected that the incoming electrical supply voltage has dropped below the acceptable operating range. The dishwasher stops operation to protect its electronics and motors from running under insufficient power. The issue can originate from the home's electrical system or from internal wiring problems.

No, you should not attempt to continue running the dishwasher while the E:18 fault is active. Low voltage conditions can cause motor overheating, incomplete cycles, and damage to the control board over time. The dishwasher's protective shutdown is designed to prevent this damage, and it should remain off until the root cause is identified and corrected.

Resetting the dishwasher may temporarily clear the E:18 code, but the fault will return if the underlying low voltage condition is not resolved. A reset does not fix a weak electrical supply, a failing breaker, or a faulty wiring connection. Treat the reset only as a way to confirm whether the error reappears, and use it as a starting point for diagnosing the actual cause.

Some causes of E:18 are DIY-friendly, such as checking that the dishwasher's circuit breaker is fully engaged and that no other high-draw appliances are sharing the same circuit. Using a multimeter to verify that line voltage at the outlet is within the proper range is also a practical first step. However, if the issue involves internal wiring, the control board, or the home's electrical panel, a licensed electrician or appliance technician should handle the repair.

Repair costs vary widely depending on the cause. If the fix is as simple as resetting a breaker or redistributing circuit load, there may be no cost at all. Electrician visits to address wiring or panel issues typically run in the range of $75 to $250 or more. If the main control board needs replacement, parts and labor combined can range from $200 to $500 or higher depending on parts availability and service rates in your area.