2002 Buick Century Owner's Manual - Page 140

Emissions Inspection and Maintenance Programs Some state/provincial and local governments have or may begin programs to inspect the emission control equipment on your vehicle. Failure to pass this inspection could prevent you from getting a vehicle registration. Here are some things you need to know in order to help your vehicle pass an inspection: Your vehicle will not pass this inspection if the SERVICE ENGINE SOON light is on or not working properly. Your vehicle will not pass this inspection if the OBD (on-board diagnostic) system determines that critical emission control systems have not been completely diagnosed by the system. The vehicle would be considered not ready for inspection. This can happen if you have recently replaced your battery or if your battery has run down. The diagnostic system is designed to evaluate critical emission control systems during normal driving. This may take several days of routine driving. If you have done this and your vehicle still does not pass the inspection for lack of OBD system readiness, see your dealer or qualified service center to prepare the vehicle for inspection. Oil Pressure Light If you have a problem with your oil, this light may stay on after you start your engine, or come on when you are driving. This indicates that oil is not going through your engine quickly enough to keep it lubricated. The engine could be low on oil or could have some other oil problem. Have it fixed right away. The oil light could also come on in the following situations: D The light will come on briefly when you turn on the ignition to show you that it is working properly. (If it doesn't come on with the ignition on, you may have a problem with the fuse or bulb. Have it fixed right away.) light may blink on and off. This is normal. D Sometimes when the engine is idling at a stop, the 2-76