P16CF - Intake Rocker Arm Solenoid Valve 2 Control Circuit
- Faulty Intake Rocker Arm Solenoid Valve 2
- Intake Rocker Arm Solenoid Valve 2 harness is open or shorted
- Intake Rocker Arm Solenoid Valve 2 circuit poor electrical connection
- Engine Light ON (or Service Engine Soon Warning Light)
P16cf DescriptionThe rocker arm actuator system enables the Engine Control Module (ECM) to change the camshaft lift and duration while the engine is operating. The camshaft has 3 lobes for each intake valve. The inner lobe is for low lift and the 2 outer lobes are for high lift. The rocker arm solenoid valve controls the 2-step lift by controlling the oil flow to the rocker arm. In default mode, a locking pin locks the inner and outer mechanisms of the rocker arm together to provide high lift. When low lift is commanded, oil pressure retracts a locking pin within the rocker arm.
P16CF Information for specific makes
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