I am having an issue with my 2018 Subaru Wrx. When I turn the key to the ignition on position the fuel pump primes for 2-3 seconds and then stops, then it comes back on and primes again for 2-3 seconds. This continues until I turn the key all the way to turn the vehicle over. The car runs and seems to have no issues, but it’s throwing a flashing check engine light. Since this has happened I have replaced the fuel pump completely along with replacing spark plugs. Could it be fuel pressure regulator or fuel pressure sensor?