No. There could be codes pending without the light being set? Generally if you have a powertrain fault. Ie. Rough running the light will come on and stay on. If the fault is intermittent it may flash the light. Then stay off for a while. But the code will still be stored. The CEL doesn't stay on untill the PCM has picked up the same fault 2/3 times?
Wednesday, December 3rd, 2008 AT 8:16 PM