Bosch Dishwasher E09: Heating Element Has Gone Dead

What E09 means

Dishes come out of an E09 cycle cold and wet, and the display carries the code, sometimes after a wash that ran suspiciously quickly. The control board sends current toward the heating element and gets nothing back: the circuit is open, meaning the element has lost electrical continuity completely. With no path for current, the machine cannot heat water at all, and it flags the problem.

Common causes of E09

Burned-out heating element, common on older machines and where scale has coated it (the usual finding with E09)
Corroded heater terminals from moisture and mineral deposits
Control board relay that no longer closes

✓ One safe check you can try

There is no safe homeowner check for E09. Confirming an open circuit takes a multimeter reading on a machine that is fully de-energized, and the element sits in water at the bottom of the tub. 1. Turn the dishwasher off at the breaker. 2. Leave it closed and unused until we arrive. 3. Make a note of how long the code has been showing so we can start there.

! Why to stop there

Terminals can still carry voltage until the breaker is off, and the element sits in standing water, so probing it yourself risks a serious shock.
Corroded terminals can crumble when removed, turning a part swap into a wiring repair.
A replacement element must match the original wattage and mounting, or the board's safety cutoff keeps tripping.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

→Same appliance

Other Dishwasher codes

E:01Bosch Dishwasher E:01: Cycle Ended Early, Heater Relay or Pump Unconfirmed E:30Bosch Dishwasher E:30, Voltage Too High and the Machine Shut Down E:31Water in the Zeolite Container - Bosch Dishwasher E:31 FBosch Dishwasher F on an Older Display (Water Filling) 2HBosch Dishwasher 2H: Long Cycle Warning on Older Displays 1Bosch Dishwasher Service Test Result 1: Aqua Sensor 2Bosch Dishwasher Service Test Result 2: Heating Group 4Bosch Dishwasher Service Test Result 4: Water Filling

E09E09 questions

Will a reset get the heater working again?

No. An open element will not close again by itself, so the code returns as soon as the board tries to heat. Only a measurement tells us whether the element, terminals or relay is the problem.

Is it worth repairing an older dishwasher with a dead heater?

Often yes, since the element is a single replaceable part. We give you a written price before work so you can compare it with the cost of a new machine.

Does Houston water cause this?

It can contribute. Mineral scale builds up on heating elements wherever water is hard, which shortens their life. A water softener helps, and we can tell you what we see on your element.