Hi Glenn the fault code 1616 if you have vauxcom or tech 2 you useually go in to ipc enter security code virginise ipc close down diagnostics remove key wait 10 seconds go back into ipc and reset ipc making sure its not lost chassis no as you will have to fill this in. this code is iften there when battery has been flat.the other code relates to wiring.if you have made no progress give me a ring om 07802290599 and i will walk you through test.Mike McDowell .