Review Of 1999 Buick Century Check Engine Light Flashing References. Illumination of the check engine light may be the result of a loose or worn gas cap. The yellow light means the problem is minor, but if the red light comes on, the car should be stopped as soon as.
Web what could cause a flashing check engine light on a buick century? If you have a flashing check engine light, turn off the engine immediately to prevent potential motor damage. A good scan tool will gather information form the engine computer and suggest to the technician which cylinder (s) are misfiring.
