Connection failed

[Freddy97]

CONNESSIONE FALLITA
ELM327>ECU Connection failed!
No response from module. Check if interface is properly connected to the vehicle and vehicle key is ON!
Sistema climatizzatore Fiat 500 con elm a3
Can anyone help me please ?

[BBOinsam]

Hey, my GPRS was working fine yesterday, but today when i try to connect to it i get first a screen that says

"GPRS authenticaion failed"

And then a screen that says:

"Connection not available"

any way i can sort this out? Thanks.

[s130]

What is GPRS? No serious question as GPRS is not any module/node listed for MES.