Car won't start or starts, remains on for about 15 seconds with no action, but when applying gas the engine immediately shuts off. Once gas is applied and the car shuts off, it will not restart for several hours. Initially, the engine shut off while driving, and at the time it would not restart.


Now, when key in ignition "check engine" and "power steering malfunction" light remain on. And, the "security indicator light" remains off. Gas pump sounds like it's priming.


Getting the following Codes:
P0101 - MASS airflow sensor (was pulled and cleaned, no change)
P1260 - Immobilizer system
U0442 - Power Steering Pressure

2012 Mazda 3i Skyactive w/ 170K miles


Thanks in advance.