BMW don't use P0 codes...........if you want to see P0 codes than use OBD2 system and you will get P0 codes.............

See in the attached link................

http://www.endtuning.com/bmwcodes.html

P1083 Fuel Control Mixture Lean (Bank 1 Sensor 1)
P1085 Fuel Control Mixture Lean (Bank 2 Sensor 1)

Those codes are for lean fuel mature............check for any vacuum leak in intake system, Air filter, Air Mass Dirty, S/Plugs, Rocker Cover gasket leak, Oil Cap Air Leak................and so on.............. 

 Autel works like OEM tool. So, it's because of this, that DTC codes are not P and are what BMW has.

 Use the OBDII Icon on the tool, this is a generic OBDII tool and should give you P0XXX and P1XXX codes.

 But he could not get all the DTC of the ECU if they are not OBD DTC

 Only OBDII /EOBD codes will trigger the SES/CEL/MIL. Manufacturer proprietary codes WILL NOT light the SES/CEL/MIL, they may light some other type of warning, but usually they will not light anything and not notify the driver.

I RARELY care to get anything other than OBDII/EOBD codes when working on driveability problems. Manufacturer proprietary codes are not often required and will often confuse matters due to poor language translation and/or the semantics. I the glass half empty or half full based on someone's point of view.

Unless I misunderstood the question, the OP should start with the OBDII/EOBD function of the tool first.