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.
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.