Date registered: Dec 2005
Vehicle: 222.132 & 221.122 & 212.025 & 906.633
Mentioned: 3 Post(s)
Quoted: 32 Post(s)
Wouldn't a search for the code or the readout give further guidance?
P0410 Secondary Air Injection System Malfunction
If you post the radio SN and the code, it should be safe to give you a "yes/no" answer but I guess you already know it is "no".
If the radio was switched, you must have given Jürgen the radio SN, why not try with the SN at the dealer too?