I'm With You - It Happens To Me Once Every 5 Days Or So - Doesn't Matter If I'm Towing My Antique Tractor Puller Or Just Street Driving , Did It Last Night - My Autozone Code Scanner Will Not Clear It - I Recycle The System Maybe A Dozen Times ( Shuttung And Turning The Key On ) And Starting It 6 - 7 Times And Then I Can Get The Light To Off On The Dash And I 'll Drive It And Its Fine , Then About 15 Minutes Later I Can Go Back In And Clear The Code With My Cheap Scanner