2009 i20 1.6 dies intermittently. EPS switches off
 

Hi, my car dies intermittently after about 20 minutes and the EPS switches off when it dies. I struggle to restart. but it will restart after a few minutes, the EPS remains off. Al fuses are fine and I have a new battery. Diagnostics did not reveal any codes, but the car did not die as yet when they did the test.