When I start the engine, the RPM goes up and down. And I got the code P0101 and P1009. I just clean the mass air flow. Is that probably the mercancian didn't tie the screw or didn't tie the mass air flow? Because before clean the air flow, it doesn't have this problem.

 

P1009 AUDI Air Mass Meter 1/2 Implausible Signal From Load Detection OBDII Engine Light Trouble Code | Engine-Codes.com

P0101 AUDI Mass or Volume Air Flow Circuit Range/Performance Problem OBDII Engine Light Trouble Code | Engine-Codes.com