It COULD be:

Sticking caliper pistons.

Foreign material (stone) stuck between pad backing & caliper, wedging the pad and stopping it from lifting off the disc.

Pads binding on the pad slide pins, preventing the pad from releasing.

1 x Stuck ABS modulator solenoid, preventing fluid return to the master cylinder and presurising the RHF brake line.

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[CENTER][COLOR=#ff0000]Built Ej207: Semi-closed RA Cases - Wiseco Forgies - Manley rods - BC 272 cams - GDA Heads - billet f/whl - Vi-pec - WbO2 - 800cc Yellow tops - TD05-20G - 409Hp ath @ 1.75bar on E85[/COLOR][/CENTER]