2003 Buick Century Owner's Manual - Page 146

This light will also come onduring a malfunction in one of two ways: Light Flashing- A misfire condition has been detected. Amisfire increases vehicle emissions and may damage the emission control system on your vehicle. Dealeror qualified service center diagnosis and service may be required. e If the light continues to flash, when it is safe to do so, stop the vehicle. Find a safe place to park your vehicle. Turn the key off, wait at least 10 seconds and restart the engine. If the light remains on steady, see "If the Light Is On Steady" following. If the light is still flashing, follow the previous steps, and drive the vehicle to your dealer or qualified service center for service. Light On Steady -An emission control system malfunction has beendetected on your vehicle. Dealer or qualified service center diagnosis and service may be required. If the Light Is On Steady You may be able to correct the emission system malfunction by considering the following: Did you recently put fuel into your vehicle? If so, reinstall the fuel cap, making sure to fully install the cap. See Filling Your Tank on page 5-7. The diagnostic system can determine if the fuel cap has been left off or improperly installed. A loose or missing fuel cap will allow fuel to evaporate into the atmosphere. A few driving trips with the cap properly installed should turn the light off. Uld you lust drtve through a deep puddle of water? If the Light Is Flashing The following may prevent more serious damage to your vehicle: Reducingvehiclespeed. Avoiding hard accelerations. Avoidingsteepuphill grades. . ) +--:I-.---J..-- 4.L.-c -.---...If y u u l u v v t l l z u a l l c l , Icuuvz 11 I a lluul It y 1 cargo being hauled as soon as it is possible. 1 1 - 1 1 _re +e,.*:-- I alG ut -r If the light stops flashing and remains on steady, see "If the Light Is On Steady" following. If so, your electrical system may be wet. The condition will usually be corrected when the electrical system dries out. A few driving trips should turn the light off. 3-37