Throttle Lag Engine Response

[andy750]

Hi all, I have a 56 plate Avensis 2.2 d4d estate 2AD-FTV and I've noticed over the last couple of days that the throttle response is pretty poor, it takes anywhere between 2 and 5 seconds to respond once I put my foot on the accelerator, it only occurs in first or second gear this is due to pulling away from a junction or roundabout. I thought it might be the airflow sensor but would any of you guys have any idea what it could be?? Thanks in advance.