Clio 1.6 K7M Engine - 'h' Diagnostic Code

Hi all,



I've got an 'h' diagnostic code using the self-diagnostic test of my Clio Mk2 1.6 RXE (K7M Engine).



A quick Google show it's either (a) Oil Level Sensor or (b) Oil Pressure Sensor.



Does anyone know which of these it's more likely to be? I have no warning lights on my dash so am unable to tell, plus my oil is topped up and clean.



Also does anyone know of the location of these sensors? The Haynes manual says it's NOT near the oil filter (of course) but is on the rear of the engine.



Any photos / guidance gratefully received!



Cheers,



J.