Car is running fine, but feels like it is losing power.
I had the following codes:

8C Activation Map Cooling
22 Function, inlet Camshaft Control Bank 2
62 Activation Tank Venting Valve
71 Signal Camshaft Position Sensor Bank 1
OD Oxygen Sensor heater before Cat. Conv. bank 1

I replaced the following:

Fuel Tank Breather Valve (Vent Valve)
Mass Air Flow Sensor
Thermostat
Both O2 sensors before the Catalytic Converter

Now I still have the following codes:
8C Activation Map Cooling
22 Function, inlet Camshaft Control Bank 2
71 Signal Camshaft Position Sensor Bank 1

I thought this would fix all of the issues, but it did not. I don't want to keep throwing parts at this because they are expensive. I do have a way to test the camshaft pos. sensors which I plan to do soon.
About 50k miles ago we did a lot of work on this car: timing chains, vanos, camshaft pos. sensors, valve covers, water pump, and more.

It would be really nice to get some help with these codes. I can't figure out the Map Cooling code, and would really appreciate any help on the other two codes.