Check engine codes
 

Hello all,
I am a new owner of a 2005 cl65.....have had the car for 1 week and now check engine light is one for multiple codes. I'm trying to isolate each code by fixing one problem at a time and move on to the next one. Looking for help here. The code I would like to get fixed is P2003 (same as P0410 I believe?). From searching and reading threads, I know there are two things I should check. Pump itself and relay. I have been able to located the pump.....may someone enlight me on where is thr relay for the pump on my model please?.
Much appreciated your help.

Post your VIN!

Thanks,
The VIN for my car is WDBPJ79J65A046495

Don't jump to conclusions on the pump. There are small rubber lines leading to and from the electric switch over valves on the passengers side valve cover that deteriorate over time and leak the nesecary vacuum to actuate the valves in the head.

Do you have a pic of that line sir?

See the valve circled, just follow all the lines to and from there.