1992 cadilliac stalls

:x mm 1992 cadilliac seville run fine but when I stop at the store for 5 minutes and return to start the car it wont start when I turn the key the radio lights go out but the dash gauge lights stay on the starter does, nt make a sound ilet it sit for 30 minutes to one hour and the car starts on first crank i, ve installed new sparkplugs and spark plug wires an ingnition coil, ignition module distributor cap and rotor button I also checked the codes I only found one code ( io-52 and I dont know what it mean where do I go from here please help