OBD 2 Codes

Hi

I have a Megane 2005 sport tourer automatic transmission 1,6 just read the ecu and got this.
Confirmed Trouble Codes
-B07F1: ISO/SAE Reserved (Body, Generic)

Pending Trouble Codes
-P087F: ISO/SAE Reserved (Powertrain, Generic)
-P16E4: Unknown Trouble Code (Powertrain, Unknown)

Permanent Trouble Codes
-none

Diagnostic information provided by OBD Auto Doctor

What does this mean the codes are not always.

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OBD 2 Codes