codes...help please...

[Blue_S4]

got a misfire last night that goes away after about a minute or 2. heres my codes

10 Faults Found:

18057 - Powertrain Data Bus: Missing Message from ABS Controller
P1649 - 35-00 - -

16805 - Shareware Version. To Decode all DTCs
P0421 - 35-00 - Please Register/Activate

16815 - Shareware Version. To Decode all DTCs
P0431 - 35-10 - Please Register/Activate - Intermittent

17837 - Circuit for Brake Vacuum Pump: Open Circuit
P1429 - 35-00 - -

18320 - Shareware Version. To Decode all DTCs
P1912 - 35-00 - Please Register/Activate

18058 - Shareware Version. To Decode all DTCs
P1650 - 35-00 - Please Register/Activate

17862 - Exhaust Gas Temp Sensor 1 (G235): Short to Ground
P1454 - 35-00 - -

17866 - Shareware Version. To Decode all DTCs
P1458 - 35-00 - Please Register/Activate

16684 - Shareware Version. To Decode all DTCs
P0300 - 35-00 - Please Register/Activate

16689 - Cylinder 5 Misfire Detected
P0305 - 35-00 - -


I then clear the codes, start car, and p1649, p1650, p1429, p1458, p1454, p1912 all come up again...

any thoughts on where to start?

[Caddy7]

Any updates? Is the car running ok?

[Blue_S4]

Any updates? Is the car running ok?

car is back to normal, has been for a while. it was my ICM on bank 2. just swapped it out, and has run without a hitch since then.