Hi just a bit of help with one, I have not had this before. This is a corsa c that has come from a car sales pitch where they was moving it around and it cut out, they put more petrol in think it was that, so then it came to me.
The car will start and run for a mater off 3 to 4 seconds then cuts out the engine mil comes on when you switch on and goes when the car starts but then does not come back on when the engine cuts out.
Fault codes are, engine
P 1615 wrong vehicle id from bcm
P 1616icm vehicle id not programmed
U 2100 no comms with can bus [high speed]
U 2107 can bus no comms with bcm
U2108 can bus no comms with abs
U 2108 no comms with abs

In the bcm
U2103 e bus malfunction
U2104 v bus reset counter overrun
U2105 invalid data from ecm
U2108 can bus no comms with abs
Tried an extra earth on the main engine ecu, no different. Is there any bad wiring points or connectors I am going to remover all the plugs and sockets tomorrow, as the engine is lovely and clean and sparkly. where abouts is the bcm. Ray