that is one of the problems encountered by most of the patrols here in our place. once umilaw na yan it would come back again and again. most owners sold their units na lang. other when the check dngine lit up, it would run palyado without power then tama they sould shut off the engine the normal again. better have it checked sa casa. tama timing ng unit mo wala na warranty. hope that it is just a small problem.