efcrxsi91

my dizzy was making a wired noise like metal grindin and 2 days later my car broke down so i bought a new dizzy, when i intalled the dizzy my car turns on but after 5 min. or so it will shut off.i cant start the car right away i have to wait like 15 min and wen i turn it on shuts off again after 5 min or so..throwing ecu code 15...i replaced the dizzy again and still throwing code 15 wat can be the problem????????????????wtf
please help had no car for about 2 weeks....!