C1241 Toyota - C1241 came up on a diagnostic check

Question

how crucial it is to get it into a repair shop that can check it out.

Answer 1

C1241 Low battery positive voltage

The battery should be check when you get this condition, This is the standard 12 volt battery that  should be checked.How crucial, The ABS braking system will be disabled, But you would regular brakes, just no ABS.