It is hard to say as there are many resons that it comes on. Howver the reason that it is coming on and going off is that the failing part is not quite bad enough to stay in the paramenter table that would keep the light on. It is failing intermitantly and that is why the light is going on and off.
It will aevntually faill totally.
You can go to Advance Auto ro Auto Zone and get trouble codes pulled for free.
Thursday, October 11th, 2012 AT 2:20 AM