CodeFix
Error 11Breville

Breville / Sage Oracle Error 11: temperature sensor short circuit

Error 11 means: Group head temperature sensor short circuit at startup.

The Breville / Sage Oracle shows this code with identical meaning and fix as the Oracle Touch. Full guide for ER11.

Applies to: Oracle.

Short answerThe group head temperature sensor (NTC) is reading as a short circuit: the board sees near-zero resistance, which a healthy sensor does not produce. Technician sources name water bridging the sensor contacts (a leak or steam at the probe seal) and a failed sensor as the likely causes. Because it failed at startup, a wet connector or a sensor that has already failed is plausible. Breville does not publish this code table, so the meaning comes from third-party service tables.
Part at faultgroup head temperature sensor (NTC)
Severitymedium
DIY difficultyhard
When it appearsduring the power-on self-test

How to fix Error 11

  1. Switch off at the wall and unplug. Leave the machine for an hour so any moisture dries, then try again. A short that clears after drying suggests a leak to find.
  2. Inspecting the group head temperature sensor (NTC) plug and the wiring near the boiler means opening the machine, which is technician work. A technician would look for a wet patch, white scale trails or a perished o-ring around the probe.
  3. A technician would replace any leaking o-rings at the boiler fittings and sensor probes; the leak, not the sensor, may be the true fault.
  4. If the code persists after everything is dry, the group head temperature sensor (NTC) needs replacing by a technician.
  5. Afterwards, clear the error log and run a full heat-up and a shot to confirm.
Flowchart for fixing Error 11: work through each step, stop as soon as the code clearsError 11 appears1. Switch off at the wall and unplug.Fixed?yesDone2. Inspecting the group head temperaturesensor (NTC) plug and the wiring near theboiler means opening the machine, which is…Fixed?yesDone3. A technician would replace any leakingo-rings at the boiler fittings and sensorprobes; the leak, not the sensor, may bethe…Fixed?yesDone4. If the code persists after everything isdry, the group head temperature sensor (NTC)needs replacing by a technician.Fixed?yesDone5. Afterwards, clear the error log and run afull heat-up and a shot to confirm.Still showing?If you see scorch marks, smell burning, orthe machine trips your GFCI / RCD, stop:that is an electrical fault, not just a…
The same steps as the list above, cheapest first. Stop as soon as the code clears.

When to stop and call a repairer

If you see scorch marks, smell burning, or the machine trips your GFCI / RCD, stop: that is an electrical fault, not just a sensor.

What it costs

PartsNot published by Breville. Ask an authorised service centre for a quote.
ServiceNot published by Breville. Ask an authorised service centre for a quote.
Worth repairing?Often yes, but Breville does not publish repair costs. If a leak has soaked the control board, get a quote before spending anything.

How to check the error log

Leave the machine plugged in but switched off. Press and hold 1 CUP, 2 CUP and POWER together for at least one second. After the long beep the LCD shows the firmware version (starts with "Fr"). Press the SELECT dial once to open Error Storage, then rotate it to step through errors 1 to 32 and the stored count for each. Scroll past error 32 to "ErSt" and hold SELECT for 3 seconds to clear the log.

Clear the log after a repair so you can tell whether the fault has really gone.

Beyond the fix

Did you knowThe manual says purging the group head for a few seconds before inserting the portafilter also helps stabilise water temperature before the shot.

Tips and tricks

  • Before inserting the portafilter, run water through the group head for about 5 seconds. This clears coffee residue and settles the water temperature before a shot.manufacturer manual
  • Wipe the group head and shower screen with a damp cloth, and periodically run hot water with the basket and portafilter in place but no coffee.manufacturer manual
  • Only for the two symptoms where the manual says so, a machine that is on but will not operate or steam pouring from the group head: switch off, wait 60 minutes, switch back on. For an Operation Error message the manual says to contact Breville.manufacturer manual

Common mistakes

  • Clearing or ignoring the stored error without noting which code and how often it appeared, which loses the best clue for a technician.
  • Opening the lid to poke at wiring or probes on a mains-powered machine. Technicians treat that as qualified work.

Easily confused with

  • An on-screen Operation Error message is a generic fault notice in the manual, not one of these numbered codes. Check the service menu for the stored number.

Further reading

Questions

What does Error 11 mean on the Breville / Sage Oracle?

Group head temperature sensor short circuit at startup. The group head temperature sensor (NTC) is reading as a short circuit: the board sees near-zero resistance, which a healthy sensor does not produce. Technician sources name water bridging the sensor contacts (a leak or steam at the probe seal) and a failed sensor as the likely causes. Because it failed at startup, a wet connector or a sensor that has already failed is plausible. Breville does not publish this code table, so the meaning comes from third-party service tables.

Can I fix Error 11 myself?

DIY difficulty: hard. Switch off at the wall and unplug. Leave the machine for an hour so any moisture dries, then try again. A short that clears after drying suggests a leak to find. Inspecting the group head temperature sensor (NTC) plug and the wiring near the boiler means opening the machine, which is technician work. A technician would look for a wet patch, white scale trails or a perished o-ring around the probe.

How much does it cost to fix Error 11?

Not published by Breville. Ask an authorised service centre for a quote. Not published by Breville. Ask an authorised service centre for a quote.

Is it worth repairing?

Often yes, but Breville does not publish repair costs. If a leak has soaked the control board, get a quote before spending anything.

Error 11 during startup or during use?

Breville / Sage Oracles report Error 11 during the power-on self-test. That timing is a useful clue when narrowing the cause.

Can I keep using the machine with Error 11 showing?

Usually you can finish the drink you are making, but do not ignore it — the underlying fault rarely heals itself. Work through the cheap checks first.

Will Error 11 clear on its own?

Rarely. A reset or power cycle is worth one try, but Error 11 with a "hard" difficulty rating almost always means a failed component that has to be replaced.

How long does the repair take?

This one is a bench repair for most owners — the teardown, test and reassembly are the bulk of the work, not the part itself.

How reliable is this page?Breville and Sage do not publish a table of error codes for these machines in the documents we found. The meanings on this page come from third-party repair references and owner reports, so treat them as lower confidence. If your machine shows a text alert, follow the on-screen text first. Model revisions can differ: if your machine behaves differently, tell us. See our editorial policy.