E05 Moderate Moderate DIY

Bosch Washer E05 — Heating Element Fault

Bosch Washer · Error code E05

What E05 Means

The water has not reached the target temperature within the allowed time. The cycle continues unheated or stops.

Symptoms

  • Wash water stays cold
  • Long cycle times
  • Hot wash selection produces cool water
  • Tripped breaker on heat phase

Common Causes

1
Failed heating element

Element open-circuit due to limescale buildup or burnout.

2
Faulty NTC temperature sensor

Sensor reports wrong temperature so control aborts heat.

3
Heating element wiring burnt

Terminal connections oxidized or melted.

4
Control board heating relay failure

Relay on main PCB welded open or shorted.

5
Insufficient water level

Pressure switch fault prevents heat enable until fill confirmed.

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.

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.

Common replacement Heating element with NTC View on Amazon→ Common replacement NTC temperature sensor View on Amazon→

More Bosch Washer Codes

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

All Bosch codes → All washer 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.