P16CF - Intake Rocker Arm Solenoid Valve 2 Control Circuit

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
Comments  |  Add Comment

Possible causes

  • 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

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P16cf Description

The 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.

The rocker arm solenoid valve receives a signal from the ECM. The ECM controls the rocker arm solenoid valve by supplying a 12 V PWM signal. The ECM supplies a ground to the low reference circuit.

OBDII Code P16cf - Intake Rocker Arm Solenoid Valve 2 Control Circuit - AutoCodes.com

P16CF Information for specific makes

  • P16CF BUICK Intake Rocker Arm Solenoid Valve 2 Control Circuit
  • P16CF CADILLAC Intake Rocker Arm Solenoid Valve 2 Control Circuit
  • P16CF CHEVROLET Intake Rocker Arm Solenoid Valve 2 Control Circuit
  • P16CF GMC Intake Rocker Arm Solenoid Valve 2 Control Circuit

Need more help?

Get the P16cf code diagnosed by a professional: Find a repair shop in your area

Related Information

P16CF Comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P16cf code? Have you replaced any parts?
Any information is appreciated. Thanks
Top ⇧