Bosch Dishwasher E02 — Heating element / NTC sensor fault
Bosch Dishwasher · Error code E02
What E02 Means
The control board is not seeing the expected temperature rise from the heating circuit, or the NTC temperature sensor is out of range.
Most Likely Fix
Heating element / NTC temperature sensor fault
Tools: screwdriver, nut driver, pliers, multimeter
Diagnose first: Water not heating to target temperature in expected time; usually open heating element.
Find this part on Amazon →If the primary fix doesn't resolve it:
Symptoms
- Dishes come out cold and wet
- Cycle stops part way
- Long cycle time
- No drying action
Common Causes
Open element in the Bosch flow-through heater (no resistance across terminals).
Sensor reads short or open, board cannot trust temperature.
Burned terminal or rodent damage on heater leads.
Heater relay on the PCB stuck open.
How to Fix It
- Power off at the breaker before any electrical test.
- Pull the dishwasher and remove the lower kickplate to access the heat pump/heater.
- Ohm the heater across its terminals (typical 20-40 ohms for Bosch flow-through).
- Ohm the NTC sensor at room temp (~50k ohms typical) and verify resistance drops with heat.
- Inspect heater connector for burnt pins; replace harness if scorched.
- Replace the flow-through heater assembly if the element is open or shorted.
Parts You May Need
If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.
More Bosch Dishwasher Codes
Verified against manufacturer documentation: bosch-home.com
Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.