The invention relates to a pumping device including a pump (1) comprising - apumping chamber (11) having avariable volume, - an inlet (2) communicating with the pumping chamber (11)and comprising a valve, - an outlet (5) communicatingwith the pumping chamber and comprising a valve, - an actuator adapted tochange the volume of the pumping chamber, - afluidic pathway comprising said inlet (2), said pumping chamber (11), saidoutlet (5) and a downstream line (7) situated downstreamof the outlet valve, - a pressure sensor (4) for measuring the pressurebetween the valves of said pathway, - processingmeans for processing the received pressure data from the pressure sensor (4).The invention also covers a method for detecting adysfunction in a pumping device as defined above.
