Breville / Sage Barista Touch ER08: temperature sensor short circuit
ER08 means: Milk jug temperature sensor short circuit detected during operation.
How to fix ER08
- Switch off at the wall and unplug. Leave the machine for an hour so any moisture in the connectors dries, then try again. A short that clears after drying tells you there is a leak to find.
- Dry the milk sensor pads on the drip tray area and the sensor cable underneath the tray. Milk running down into the sensor cavity is the classic cause; reseat the sensor knob and its spring and boot.
- Replace any leaking o-rings at the boiler fittings and NTC probes. Kits are cheap and the leak, not the sensor, is often the true fault.
- If the code persists after everything is dry, replace the milk jug temperature sensor (NTC).
- Clear the error log and run the machine through a full heat-up and a shot to confirm.
When to stop and call a repairer
If you see scorch marks on the triac board or the machine trips your GFCI / RCD, stop: that is an electrical fault, not just a sensor.
What it costs
Parts: Genuine NTC sensor assemblies run about $25 to $95 depending on which sensor it is (steam wand and milk-jug sensors are the dear ones). O-ring kits are $10 to $20.
Service: Out-of-warranty Breville service quotes for internal faults are commonly $300 to $500, sometimes more, plus shipping. Independent espresso repair shops are usually cheaper for a sensor swap.
Worth repairing? Yes in most cases. Sensor plus o-ring kit is well under $100. If a leak has soaked the control board, get a quote before spending anything.
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.
Related codes on the same part
- ER05 — Milk jug temperature sensor open circuit detected at startup
- ER06 — Milk jug temperature sensor open circuit detected during operation
- ER07 — Milk jug temperature sensor short circuit detected at startup
Same fault on other Breville / Sage machines
FAQ
What does ER08 mean on the Breville / Sage Barista Touch?
Milk jug temperature sensor short circuit detected during operation. The milk jug temperature sensor (NTC) is reading as a short circuit: the board sees near-zero resistance, which a healthy sensor never produces. The two real-world causes are water bridging the sensor contacts (a leak or steam at the probe seal) and a failed sensor. Because it happened during operation, heat or steam getting at the connector is the prime suspect.
Can I fix ER08 myself?
DIY difficulty: moderate. Switch off at the wall and unplug. Leave the machine for an hour so any moisture in the connectors dries, then try again. A short that clears after drying tells you there is a leak to find. Dry the milk sensor pads on the drip tray area and the sensor cable underneath the tray. Milk running down into the sensor cavity is the classic cause; reseat the sensor knob and its spring and boot.
How much does it cost to fix ER08?
Genuine NTC sensor assemblies run about $25 to $95 depending on which sensor it is (steam wand and milk-jug sensors are the dear ones). O-ring kits are $10 to $20. Out-of-warranty Breville service quotes for internal faults are commonly $300 to $500, sometimes more, plus shipping. Independent espresso repair shops are usually cheaper for a sensor swap.
Is it worth repairing?
Yes in most cases. Sensor plus o-ring kit is well under $100. If a leak has soaked the control board, get a quote before spending anything.
Code meanings are compiled from manufacturer service references and repair documentation for the BES880; fixes follow documented repairs and owner reports. Model revisions can differ. If your appliance is under warranty, contact the manufacturer before opening it.