what are the codes PO123 and P0015 for a mercedes benz c280 2006

Question

obd codes are PO123 and P0015 what are they and what do I need to fix

Answer 1

P0123 Throttle Position sensor / switch "A" circuit high input

P0015 Incorrect position of the exhaust camshaft

P0123 is generic code , the MBZ uses a throttle actuator position sensor and a electronic throttle actuator , This does not mean this code is invalid, it is valid but not descriptive , circuit high means a disconnection, the throttle actuator if  not properly connected can and will retard the exhaust cam timing,