Cruel-Merc

Hey folks, the car is a c230k 2005. I have these code errors shown in pic and i have no idea what it mean but i think the first error is triggering the other 2 codes. I tried searching the internet but with no luck. I noticed oil on the vacuum pump and it looks like it needs to be replaced. The RPM is playing when the cars sitting in drive gear maybe the vacuum pump has nothing to do here but just thought I'd throw this info here .

Kazi04

These are generic ODB II codes which sometimes do not mean much on a MB - what problems are you experiencing besides the RPM's fluctuating while in gear?

Cruel-Merc

I also noticed the rpm goes down a little bit when i turn on my bi-xenon lights , i asked an indy yesterday and he said that it shouldnt be doing that.