Just had an ordeal this spring...A vehicle had both front brakes dragging {as in no way to hand spin after a few miles}...And against all odds...Both rubber lines went bad !!! Usually one or the other but this was a first for me and had me for a while...TIP: For a quick check bleed the caliper...If it releases it's the hose or upstream from there...If it does'nt bleed/release pressure it's a caliper issue....