Originally Posted by
cap21
Hello OKSid,
The error message indicates that the fuel is running very rich due to too much air entering the inlet. My son removed the flexible pipes connected to the inlet manifold and found a 3 inch axial split on the underside of the breather pipe from the back bank of cylinders to the manifold.
One small correction, the error message indicates the engine is running too lean (not enough fuel).
That is also consistent with the air leak your son found. The MAF didn't register all the air going to the engine.