getting scan code of p0100 maf malfunction on 2001 Mercedes-Benz CLK430

can you tell me exactly what that code means and how to repair

Asked by for the 2001 Mercedes-Benz CLK430
ck for vac leak 1st then clean mass air flow with air flow cleaner
1 more answer
a po100 means something is wrong with the MAF circuit, it could be the MAF sensor, wiring, or even vacuum leak.