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The code set here can occur when low voltage occurs,the battery is disconnected and reconnected or if the battery is replaced or computer unplugged and plugged back in.I would clear out the code here and if it comes back then the internal battery in the engine computer is dead and the computer needs replaced.
The message you see is due to the theft system engaging.What happens is the small wires at the back of the key ignition cylinder (the cylinder the key inserts into to start the engine) breaks off or starts to break off.Then the key data from the chip in the key is not being sent to the control module to allow starting.This causes an intermittent no crank issue.
Usually what has to be done is the ignition key cylinder will need replaced and in some cases new keys to match the new cylinder.I have had to do this several times before in the past for this fault you see here.This can sometimes cause other lights to flash or come on as well.
I suspect your ignition key cylinder needs replaced to correct this here and if the keep alive code continues to come back after it is cleared out then the engine computer (PCM) needs replaced and programmed.
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