vectra dti problems - r5jame5

hi i have a 2001 vectra 2.0 dti it has a very weird problem it is fine when cold starts perfect drives perfect and as soon as it gets warm it starts cutting out and warning light comes on and when properly warm it wont run at all .plugged it in to a diagnostic machine and it came up with critical system malfunction and help would be great thanks

vectra dti problems - Avant

Moved to Technical.