Bosch · Washer Moderate
E05 — Heating Element Fault
Bosch's official US washer codes use an E:XX / F-code / icon format; a bare 'E05' is not in the official US list. The 'heating element fault' explanation below is not confirmed on Bosch's US consumer page — verify against your model's manual.
- Keep using it?
- Yes, with caution
- DIY difficulty
- Moderate
- Verified against
- bosch-home.com ↗
How to fix it
- Unplug the washer and remove the front or rear panel for heater access.
- Disconnect the heating element wires and test resistance (~25-30 ohms typical).
- Replace the element if open or shorted to ground.
- Inspect the terminal block for corrosion or burn marks.
- Test the NTC sensor (typically ~10k ohms at room temperature).
- If heater and NTC are good, the control board's heater relay is suspect.
Why it happens
Typical signs: Wash water stays cold · Long cycle times · Hot wash selection produces cool water · Tripped breaker on heat phase
- Failed heating element Element open-circuit due to limescale buildup or burnout.
- Faulty NTC temperature sensor Sensor reports wrong temperature so control aborts heat.
- Heating element wiring burnt Terminal connections oxidized or melted.
- Control board heating relay failure Relay on main PCB welded open or shorted.
- Insufficient water level Pressure switch fault prevents heat enable until fill confirmed.
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 washer codes
Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: bosch-home.com.