You could clean the throttle body or check what else I found...
P2104 - Throttle Actuator Control (TAC) System - Forced Idle
P2112 - Throttle Actuator Control (TAC) System - Stuck Closed.
P2104 was set because the pcm had to step in to set the idle. The TAC system is in the failure mode effects management (FMEM) mode of forced idle. P2104 is just an informative code, set because of P2112. P2112 possible causes: Binding throttle body, stuck closed or
Damaged PCM
An engine cylinder misfire has been detected in the # 8 cylinder
Trouble code P2106 means: Throttle actuator control (TAC) system-forced limited power mode
The Ford diagnostic code 316 is a misfire detected at engine start up.
Trouble code P0171 means: Fuel System Too Lean (Cylinder Bank 1)
Cylinder #4 misfire.
the manufacturer or dealership
I don't believe you can do that with OBD2 systems.
The country code and area code of Mettmann, Germany is 49, (0)2104.
Trouble code P0431 means:Warm up catalyst efficency below threshold
how to diagnostic this code
Trouble code P0506 means: Idle control system, rpm lower then expected
Trouble code P0171 means:System too lean (Bank 1)