1996 Buick Roadmaster Owner's Manual - Page 120

This systemis called OBDI (On-Board T Diagnostics-Second Generation) andis intended NOTICE: to assure thatemissions are at acceptable levels for the life of the vehicle, helping to produce a cleaner If you keep driving your vehicle with light this environment. (In Canada, OBD is replaced by I1 on, after a while, your emission controls may not Enhanced Diagnostics.)The SERVICE ENGINE SOON work as well, your fuel economy may not be as light comes on to indicate that there problem and is a service is required. Malfunctions often. will be indicated good and your engine may not run as smoothly. This could lead to costly repairs that may not be by the system before any problem apparent, which is covered by your warranty. may prevent more serious damage your vehicle. This to system is also designed to assist your service technician in correctly diagnosing any malfunction. This light shouldcome on, as acheck to show youit is working, when the ignition on andthe engine is not is running. If the light doesn't come on, haveit repaired. This light will also come on during a malfunction in one of two ways: ~ e Light Flashing-- A misfire condition has been detected. A misfire increases vehicle emissions and may damage the emission control system on your vehicle. Dealer or qualified service center diagnosis and serviceis required. e Light On Steady -- An emission control system malfunction has been detected on your vehicle. Dealer or qualified service center diagnosis and service may be required. 2-60