Been getting code P 0236 {turn the key 3 times method} for about the past month. Now when I try bringing up codes {turn the key etc. } just shows the odometer reading, tried checking the hour meter and I get: C - Code, then after that : 00 00 . Reason I had been checking the codes was surging with my Quad box which stopped after I disconnected the box , a couple of days later I put dialectric grease on all the connections and hooked it back up. Its been running fine, no surging just this deal with the codes. Any ideas?