Wassup peeps...I'd greatly appreciate this forums help and expertise on this matter. I have a 01 E320 and I pulled the codes with a scan tool, and I pulled these 7 codes:

P0141- o2 sensor heater (bank 1 sensor 2) twice.
P0170- fuel trim malfunction (bank 1)
P0173- same as above (bank 2)
P0100- MAF or VAF "A" malfunction
P0110- IAT sensor malfunction
P0115- eng. coolant temp mal


and these three pending codes:

P0156- o2 sensor (bank 2 sensor 2)
P0221-TPS pedal position sensor/switch B ckt range/performance
P0300-random/multiple cylinder detected misfire

Can someone please explain what these codes mean and how to correct these problems???