2002 C320 w203 code p2071 & p2086

[DavidH714]

Hi, I need some advise to diagnose causes & parts needed to fix code p2071 & p2086. I have replaced all coils, wires, & plugs but still have rough idle problem. Fresh oil & filter change. Drives fine at speed. What is wrong,

2002 c320 base wagon. W203

Thanks in advance!

David

[DavidH714]

P.s. I replaced all coils & plugs twice. Had cylinder 1 misfire code, that have been cleared & gone away.