As it says in title really driving driving to work this morning and oil pressure light come on got out and it's rattling like a bag of old spanners it's booked in to have pcv changed next week and I checked oil everything looked OK just sounds terrible any body had anything similar cheers 

It is possible the oil sensor is failing... with puts the car in a limp/engine save mode 

Best way would be to get a vcds scan to check for any faults.

Hello Liam,

If it were mine, I would not ( should be in capitals)  drive this car - not even to the garage. You have a low oil pressure warning, and the worrying thing is you have an engine rattle. This car is trying to tell you something - such as the lack of oil pressure which this light is advising you of. This could be - and you hope not - a symptom of no oil being pumped under pressure around the engine.

Sorry Piotr, but personally I would not be inclined to think along the lines of a faulty oil pressure warning switch. The engine is rattling which suggests low/zero oil pressure , rather than good oil pressure and a faulty sensor.

Please Liam, treat these symptoms with respect. 

I can just wish you good luck with it.

Kind regards,

Gareth.