SouthernGtWagon

Hello I have just bought my first subaru after taking my mates pre facelift rs for a drive. Its a 1991 Legacy Gt manual and since I bought it it is hard starting when the engine is cold and brings up flash code 13 which is cam angle sensor / circuit i think? The only other thing is the black wire from my airflow meter is removed from the loom and has a broken crimp connector on the other end. This may be a entirely different problem I can upload photos if that helps Has anyone come across this problem before . Any help would be appreciated. Cheers