How to Repair the ER05 or ER06 Error on the Breville/Sage Touch BES880

 

Breville Barista Touch Milk Sensor and Steam Probe Repair Kit

Barista Touch (BES880) Milk Sensor / Steam Probe Repair — Fix ER05, ER07 & ER08

Replace the milk sensor / steam probe wire and correctly align the jug pads to resolve ER05, ER07, and ER08 errors on the Barista Touch.

Buy the Steam Probe / Sensor Kit Watch the video tutorial

Fixes

  • ER05 milk sensor error
  • Jug not detected / “place milk jug” loop
  • ER07 / ER08 wiring faults

Tools

  • Phillips & T20 Torx drivers
  • Small flat screwdriver or pick
  • Needle-nose pliers

Time

~15 minutes

Step-by-Step: Milk Sensor / Steam Probe Wire Replacement

Power Down & Prep

Unplug the machine. Remove the water tank, bean hopper, and drip tray.

Remove Base Screws

Undo the five Phillips screws underneath to release the two side/bottom panels.

Removing the five Phillips screws underneath the Barista Touch

Free the Sensor Board

Remove the four screws holding the milk sensor board.

Milk sensor PCB screw locations

Remove the Sensor Cover

Lift off the plastic sensor cover to expose the assembly.

Removing the milk sensor cover

Release the Assembly

Remove the rubber boot and spring holding the sensor assembly in place.

Rubber boot and spring removal

Unclip the Cable

Disconnect the sensor board cable to fully release the board.

Unclipping the milk sensor cable

Replace the Broken Sensor Wire

Remove the damaged wire and thread the new one through the same path. A small screwdriver helps guide it neatly.

Threading the new steam probe / milk sensor wire

Align the Jug Sensor Pads

Critical: When refitting the board, ensure the three jug sensor pads align perfectly with the contacts or you’ll get jug placement errors.

Tip: Keep the pads centred; don’t overtighten initially — seat, check alignment, then snug down.

Aligning the three jug sensor pads

Avoid Twists to Prevent ER07 / ER08

Route the new wire without twists or sharp bends. Twisted or pinched wires commonly trigger ER07 or ER08.

Correct wire routing to avoid ER07 and ER08

Reassemble Carefully

Hold the triangular piece in place while refitting screws, then reinstall the spring and rubber boot, followed by the three covers.

Holding the triangular locator while refitting screws Final reassembly of covers, spring and boot

Troubleshooting After Reassembly

  • Still shows ER05: Recheck cable connection and wire continuity; confirm pad alignment.
  • ER07 / ER08: Re-route to remove twists; ensure the wire isn’t pinched; reseat the board connector.
  • Jug not detected: Loosen board screws, re-centre pads, then retighten evenly.
⚠️ DIY repairs carry risk. Proceed only if you’re confident. See our full disclaimer.

Tags: Barista Touch ER05, BES880 milk sensor, steam probe wire, jug sensor error, ER07, ER08