Whirlpool Dishwasher Error F03

How to Fix Dishwasher Error Check the heating element for continuity (approx 10-30 ohms).Check wiring to heater.Inspect OWI (Optical Water Indicator) sensor. As an Amazon Associate, we earn from qualifying purchases through links on this page. Recommended Parts to Check This page already had a Whirlpool part recommendation. Verify the complete appliance model number before ordering, because part fit can vary by model revision. Whirlpool part search: W10518394 Estimated part range: $50 - $150 Fit note: Confirm this part against the full Whirlpool dishwasher model number before buying. Search Amazon for W10518394

What to Check Next on This Whirlpool Dishwasher Focused repair path: dishwasher fill, wash, drain, heating, and control checks; recurring electronic fault timing matters. Do not treat the code as a reset-only problem if it keeps returning; use what the appliance does during the failed part of the cycle to choose the next check. Turn power off before opening panels, then confirm the door latch closes cleanly and the control accepts a fresh cycle selection. Check the water supply valve, inlet hose, float area, filter, sump, spray arms, and drain hose for restrictions that can trigger repeated codes. Run a short cycle and note when the fault returns: during fill, wash, drain, or heat, because that timing points to different parts. If water movement is weak, inspect the circulation pump path and wiring before replacing the control board. If the same error returns after cleaning and supply checks, use the full Whirlpool model number to match the inlet valve, drain pump, heater, sensor, wiring, or control part. Check, inspect, clean, test, measure, remove, reconnect, clear, and replace parts only when the symptom supports that path. If these checks point toward a part, verify the complete Whirlpool model number from the appliance tag before ordering. The same error wording can use different valves, sensors, pumps, motors, heaters, locks, switches, or control boards depending on the exact model.