Your vehicle will not fail the smog inspection if the Emissions Label is missing. A vehicle may have had its hood replaced and as a result may have lost its original emissions label. This does not warrant a smog test failure. The smog technician must use the shop's Motor Application Guide or similar information system in order to look up your vehicle's required emissions components requirements. With that guide they may ascertain whether or not your vehicle is properly equipped with the required smog devices. The missing label alone will not cause a smog failure.