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

How to fix it

  1. Unplug the washer and remove the front or rear panel for heater access.
  2. Disconnect the heating element wires and test resistance (~25-30 ohms typical).
  3. Replace the element if open or shorted to ground.
  4. Inspect the terminal block for corrosion or burn marks.
  5. Test the NTC sensor (typically ~10k ohms at room temperature).
  6. 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.

  • Heating element with NTC Common replacement
    Amazon →
  • NTC temperature sensor Common replacement
    Amazon →

More Bosch washer codes

E01 E01 — Door Lock Fault E02 E02 — Motor Fault E03 E03 — Door Lock Fault E04 E04 — Water Inlet Fault E06 E06 — Door Lock Circuit Fault E07 E07 — Water Leak Detected (AquaStop)

All Bosch codes → All washer codes →

Frequently asked questions

What does the E05 code mean on a Bosch washer?

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.

What causes the E05 code on a Bosch washer?

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.

Is it safe to keep using a Bosch washer with a E05 error?

Yes, with caution. This is rated a moderate-severity fault.

How do I fix E05 on a Bosch washer?

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.

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.