PCM memory error code

Here is my code reader that I keep with my vehicle for clearing the codes.

Under 50 bucks.
This one is Actron AutoScanner
#CP9575

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I got the same one......WTF is the 'pd' behind a code? I think its "pending" as in it may clear with a few more miles...? May pony up for a bluetooth interface so I can see the friggin actual oil pressure on my mommyvan.