FluidNC Error 152

FluidNCErrorPosition is kept

FluidNC's configuration file has a problem, so it won't run until it's fixed.

Position is kept. An error means the controller refused that one line or command, so nothing moved for it. (Hamrun's reading)
What to do
  1. Read the boot messages (type $SS in the console) and look for lines starting with ERR: they name the setting.
  2. Fix that line in config.yaml (usually a misspelled key, a wrong pin, or bad indentation) and upload it again.
  3. Restart FluidNC.
Official FluidNC message: “Configuration is invalid. Check boot messages for ERR's.” source

Got a different message?

Paste it into the decoder. Hamrun's editor checks your G-code before you run it, so a toolpath that leaves the machine's travel or a missing feed rate is caught before the machine stops.

Official text copied from the FluidNC source on 2026-11-01. Steps and the position answer are Hamrun's reading unless marked “firmware says”. User reports are labelled CLAIMED.