Plasmastorm

Hi, I have a Fabia MkII 1.4 TDI PD 80, which would struggle to start when warm, and often splutter out a minute or so after struggling. The engine light would then come on. No problems at all starting cold. VCDS-Lite reported intermittent signal from the Camshaft Position Sensor, so I have replaced it. It can now barely start at all with the new one plugged in (splutters out after a few revs), but when it's unplugged it appears to be ok. It takes a little longer to start but doesn't struggle as much, and still starts properly when warm. I didn't have time before unplugging it and heading to work this morning to check the error codes but the engine light is on, presumably upset because it's unplugged. MPG and acceleration seemed to be the same as usual on my commute. Other than the light, is it much of an issue to run with this disconnected? Thanks in advance