Why is it essential to abide by a vehicle's manufacturer specifications during a Smog Check?

Abiding by a vehicle's manufacturer specifications during a Smog Check is essential because it ensures that the emissions systems are functioning as designed. Manufacturer specifications include details about emissions control technologies, calibration settings, and operational parameters that are crucial for reducing harmful pollutants produced by the vehicle.

When vehicles are designed, manufacturers must comply with environmental regulations, leading them to develop specific emissions systems tailored to meet these standards. By ensuring the emissions systems are working according to these specifications during a Smog Check, inspectors can validate that the vehicle is not only clean and compliant but also avoids potential fines or penalties for non-compliance. This adherence to specifications is vital for maintaining air quality and protecting public health, making it a key component of the Smog Check process.