Will my car pass smog with tire pressure light on?

The TPMS (Tire Pressure Monitor System) will not cause a smog check failure. The TPMS light can be ON and a vehicle pass the smog inspection. It is not uncommon for vehicles to have an illuminated TPMS light due to low battery levels in either or all of the tire monitors, including the tire monitor of the spare tire. Aug 18, 2016