October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

AIR System

Be sure air is not being directed to exhaust ports while in "Closed Loop". If block learn value goes down while squeezing air hose to left side of exhaust ports, service AIR management system. If okay, oxygen sensor is faulty.