2007 Dodge RAM - I am unsure if my code is 1001, 1000, 0101 or 0100.

Question

the first light flash count is 10, then it seem to flash very lightly & quick 1 - then engine light remains on. it does not repeat the cycle..what code do I really have?
if 1000 or 1001, they are very different problems...thank you
Don't know if a P or others because I can only get the code with the 3 on/off ignition key and count engine light flashing.

Answer 1

This may not be any code, if this was a real code condition it would mean fuel pressure too low,  with a turbo boost pressure code condition which would be true due to the engine not running, The best way to retrieve a code is with a scan tool,