Breville Coffee Machine Error E05

⚡ Quick Answer: The Breville coffee machine error E05 signals a malfunction in the brew group, typically due to a faulty steam thermistor or temperature sensor. This ... ✅ DIY Fixable

What Does Error E05 Mean?

The Breville coffee machine error E05 signals a malfunction in the brew group, typically due to a faulty steam thermistor or temperature sensor. This error often arises during the startup or milk frothing phase, accompanied by unusual grinding noises and a halt in brewing or steaming functions. Scale buildup may also contribute to incorrect sensor readings, preventing the coffee machine from completing its cycles.

Common Symptoms:

  • Machine displays ER05 at startup or during steam/milk frothing
  • Brewing/steam functions stop and machine won’t proceed
  • Error prevents operation of the coffee/steam cycle

Possible Causes

  • Faulty steam thermistor / temperature sensor (medium)
  • Scale buildup affecting sensor readings (medium)

How to Fix Error E05

DIY Fix Basic reset and cleaning

  1. Unplug the machine and let it cool fully.
  2. Make sure the water tank is properly seated and filled.
  3. Clean the steam wand and any external accessible sensors.
  4. Plug the machine back in and see if the error clears.

Technician Only Inspect/replace internal temperature sensor

  1. Disassemble the unit to access the steam thermistor/NTC sensor assembly.
  2. Test the sensor with a multimeter for proper resistance values.
  3. Replace the faulty sensor assembly or associated wiring.
  4. Reassemble and test the machine.

Parts needed: Steam temperature sensor (NTC / thermistor assembly), Wiring harness related to the sensor

🛑 When to Call a Pro:
  • Error recurs after attempts to reset and clean
  • Internal component testing indicates sensor or wiring failure
  • Unit still under warranty

Technical Specifications

wattage 1600W
component Brew Group Assembly
resistance N/A
part_number BES870BSS1A
voltage_rating 120V AC

Common Questions

What does E05 error mean on breville coffee machine?

E05 indicates a malfunction in the brew group, often due to a faulty steam thermistor affecting brewing and steaming functions.

Can I fix breville coffee machine E05 error myself?

Yes, you can try basic resets, cleaning the steam wand, and ensuring the water tank is properly seated.

How much does it cost to fix E05 error?

Repair costs for the E05 error range from $30 to $150 for parts, plus labor.

When should I call a technician for E05?

Call a technician if the error persists after cleaning, or if internal tests indicate sensor or wiring failure.

Sources & References

Data last verified: 2026-07-07

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