Stove control knobs face constant heat and grease, eroding over time. When broken, temperature control becomes impossible. Simple replacement.
See if any of these signs match your device — each one increases the likelihood of this fault.
These are the causes we encounter while repairing Temperature control knobs broken — ranked from most to least common.
Internal shaft worn from heat
Knob plastic cracked
Internal selector switch failed
Loose connection to valve
Grease buildup preventing rotation
Any of the following = a danger signal — call now and don't try to fix it yourself.
On-site diagnosis, clear pricing before any work, and a documented 6-month warranty.