What E3 Means
E3 means the dishwasher's heating element isn't functioning — the component that heats water for washing and helps with drying isn't producing heat as commanded.
Common Causes of E3
- Burned-out heating element from age or hard-water scale buildup
- Corroded heater terminals from moisture and mineral deposits
- Heating relay failure on the control board
🔧 One Safe Check You Can Try
There isn't a safe DIY check for this one — a heating-element fault is confirmed with a multimeter continuity test on a de-energized unit, which is technician work.
⚠ Why You Shouldn't Go Further Than That
- A failed element can still carry voltage to its terminals until the breaker is off — testing it live risks a serious shock.
- The element sits in standing water at the bottom of the tub; working around it without fully draining and de-energizing the unit is a real electrocution risk.
- A corroded heater terminal can crumble during removal, turning a part swap into a wiring harness repair.
- Installing a replacement element without matching exact wattage and mounting spec can trip the control board's safety cutoff repeatedly.
- Heating-element access on most models requires removing the base pan, one of the most common warranty-voiding repairs.
Still Seeing E3?
Book a factory-trained technician and get it diagnosed correctly the first time — no guesswork, no repeat visits.