Re: hi p2100 and p2102 codes come up as n/a and pending...
It may be a fault with the fly by wire motorised throttle assembly.clean the unit and check the connections on it.do this with the ignition off.reconnect the assembly and turn on ignition and check that it goes though a pre start check.it should motor open and closed on every ignition cycle.it leans set points and if it doesn't it will not work properly.good luck.
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Multiple codes can be scary but often a single fault can cause two or more codes to be logged and the fault might not be directly related to any of the codes.
This is where an obd scanner is superior to a simple code reader, as it can monitor live data and examine freeze frame data and an experienced diagnostician can make sense of the information before any money is spent.
I advise ensuring the routine maintenance is up to date and well carried out and then take your car to a guy who has some experience and decent diagnostic equipment.
Try clearing the code from the computer. If it returns again, the second hand one could be bad also! Some codes are what they call a hard code, that stays in the computer memory, and will think that the problem wasn't repaired (even though the part was replaced). Till the code is cleared from the memory, the vehicle will return to a limp mode untill the problem is resolved!!
What are you calling manifold inlet flap? The part in the pic looks pretty gunked up. Start by cleaning it or replacing it. Have you cleaned the opening on the other side of the flap? It could be hanging up on that. Let me know more about the part your talking about.
P2100 - Throttle valve control motor open circuit.
p2102 - Throttle valve control motor signal too small look at your throttle valve control motor and see if it is either burnt out or the wires are off.
either go to the dealer or remove the radio and post the radio chassis number ,i might be able to generate the code depending on the make of the radio ,when you do get the code make sure you write it on the sun visor