You may be wondering if you can keep driving with an illuminated check engine light. If the light comes on while driving, check for foul odors and whether the engine still runs smoothly. If the light flashes, it could mean your engine is misfiring. When an engine misfires it will emit huge emissions and shudder while driving.
Your check engine light could also be due to a failed ignition coil, a faulty onboard computer, or bad spark plugs and wires. Bring your vehicle to a service center and let the experts diagnose and fix the problem...