Problem  | Action  | 
|---|---|
Lack of intake air  | Refer to DTC P1191 Intake Air Duct Leak in Engine Controls.  | 
Restricted oil drain tube  | Clean or replace the oil drain tube. Refer to Oil Pressure High or Low in Engine Controls.  | 
Oil leakage past the turbo seals. Refer to Inspection.  | Replace the turbocharger. Refer to Turbocharger .  |