Same code, same fix on the Barista Touch Impress. Everything below applies to both.
Applies to: Barista Touch.
How to fix ER05
- Switch the machine off at the wall, wait 60 seconds and switch it back on. A one-off reading glitch clears; a real open circuit comes straight back.
- Look at the milk jug sensor area on the drip tray. With the machine off and cool, wipe away any milk residue or debris around the sensor with a dry cloth and let it dry. Do not take the machine apart.
- Look under and around the machine, from the outside, for water trails. Moisture on a connector can read as an open or short circuit; a technician would find and fix the leak behind it, often a boiler o-ring or hose clip.
- If the code returns, the milk jug temperature sensor (NTC) or its wiring needs replacing by a technician.
- Afterwards, clear the stored error (see how to read the error log below) so you can tell whether it recurs.
Safe check: with the machine off and cool, look at the sensor area on the drip tray for milk residue or debris and wipe it clean and dry. Do not open the machine; Breville tells owners not to.
If the code stays, the sensor or its wire needs a technician. One BrevTech video on a Barista Touch ER05 shows a kit repair that took about 30 minutes and used a drill and thermal glue. Breville does not publish part prices, so ask an authorised service centre for a quote.
Third-party tables list ER06, ER07 and ER08 as the same milk jug sensor reporting the fault at a different moment (open during operation, short at startup, short during operation), so the same repair would apply.
When to stop and call a repairer
Stop and book service if you see water leaking, a burning smell or any scorch marks. Do not open the machine yourself.
What it costs
| Parts | Not published by Breville. Ask an authorised service centre for a quote. |
|---|---|
| Service | Not published by Breville. Ask an authorised service centre for a quote. |
| Worth repairing? | Often yes for a single sensor, but Breville does not publish repair costs. Get a quote first, especially on an older machine. |
How to check the error log
Switch the machine off at the wall. Hold the front Power button, switch the wall power back on and release when the logo appears. Enter the service password 00000, then open Error Counter to see stored faults or Live Debug for live temperatures.
Clear the log after a repair so you can tell whether the fault has really gone.
Beyond the fix
Tips and tricks
- Place the jug straight down onto the sensor rather than knocking or sliding it across. A repair shop explains the probe moves each time a jug lands, and repeated knocks wear the thin wire underneath.technician video
- A new sensor kit fixes a broken wire, but the video shows the base opened and the sensor board removed. That needs a qualified technician, who would also glue the new sensor in place.technician video
Common mistakes
- Bypassing the sensor with a homemade resistor, as one owner video does with pencil lead. It removes milk temperature sensing and involves opening the machine.
Easily confused with
- ER05 to ER08 all point at the same milk sensor circuit: open or short, at startup or during use. The mix of codes shown does not mean separate faults.
Further reading
Questions
What does ER05 mean on the Breville / Sage Barista Touch?
Milk jug temperature sensor open circuit detected at startup. The control board cannot read the milk jug temperature sensor (NTC). On this code the sensor reads as an open circuit: the wire has come off, the plug is loose or corroded, or the sensor itself has failed. Because it fails the self-test at power-on, the machine refuses to start until the sensor reads again. Breville does not publish this code table, so the meaning comes from third-party service tables. ER05 on the Barista Touch is described by one technician video (Kanen Coffee) as the milk jug temperature sensor, the small probe on the drip tray area that reads the jug temperature while the wand textures milk. Breville publishes no code table, so treat the meaning as third-party. The machine checks that sensor at startup and stops at "ER05 startup error" if it cannot read it.
Can I fix ER05 myself?
DIY difficulty: hard. Switch the machine off at the wall, wait 60 seconds and switch it back on. A one-off reading glitch clears; a real open circuit comes straight back. Look at the milk jug sensor area on the drip tray. With the machine off and cool, wipe away any milk residue or debris around the sensor with a dry cloth and let it dry. Do not take the machine apart.
How much does it cost to fix ER05?
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 for a single sensor, but Breville does not publish repair costs. Get a quote first, especially on an older machine.
ER05 during startup or during use?
Breville / Sage Barista Touchs report ER05 during the power-on self-test. That timing is a useful clue when narrowing the cause.
Can I keep using the machine with ER05 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 ER05 clear on its own?
Rarely. A reset or power cycle is worth one try, but ER05 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.