Sacramento County ban on home “major auto repair”

jeff alder said
not necessarily...in some areas they are just authoritative rules or decrees or guidelines set by a municipality, however the term law is a synonym

Draw your own conclusions.

"What is the difference between laws and ordinances?
Q: What's the difference between a statute and an ordinance? A: Unlike a statute, or state law, an ordinance is a local law that is passed by municipal governing authorities, such as a city council or county board of commissioners. Ordinances also apply only to the local jurisdiction, as opposed to the entire state.Mar 24, 2015"

"Are ordinances legal?
In all states, a city or county may enact a local ordinance as a criminal law that covers the same crime or violation as a state law but only if the penalty provided by the local ordinance is higher than the state statute."

"Are city ordinances enforceable?
Violation and Enforcement. Municipalities have general powers, subject to other provisions of law to enforce ordinances and to prescribe penalties for violations. ... In some jurisdictions, the legislature by law may authorize each city, village, and town to establish a municipal court."