1.9TDI Check Engine Light problem

[eLeCtRaSh]

Hello.

Recently I have some check engine light on my dashboard. It started one day, and it turns on random. One day no light, one day there is, other no.
But in last 2-3 days is always on, I don't have vcds nearby now, in a month I will have.
Can anyone suggest what could be.

Note that car goes like before, no powerlessness, no strange sounds nothing at all that I feel.

 

[fouryoghurts]

Aside from checking visually under bonnet there's no point speculating. Needs a scan to check the problem circuit(s).

 

[eLeCtRaSh]

Found a problem. It's a temperature sensor that is faulty or loose connection.
Just to let you know and maybe someone will find this helpful in future

 

[fouryoghurts]

Excellent. You revealed a poor connection by checking plug security? So did you renewal the sensor or the plug head?