AutoCodes.com | All About OBDII Engine Codes
AutoCodes - GMC - P16D2 GMC

P16D2 GMC Code - Intake Rocker Arm Solenoid Valve 2 Control Circuit Low Voltage

- Code Popularity: 751 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
Share on Facebook   Share on Twitter   Share on Linkedin

What are the Possible Causes of the DTC P16D2 GMC?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other 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
⚠ Does your GMC have Safety Recalls? → Check here

How to Fix the DTC P16D2 GMC?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Search for P16D2 GMC Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P16D2 GMC code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code P16D2 GMC 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 P16D2 GMC - Intake Rocker Arm Solenoid Valve 2 Control Circuit Low Voltage - AutoCodes.com
P16D2 GMC Code - Intake Rocker Arm Solenoid Valve 2 Control Circuit Low Voltage

Need More Information on the Code?

Need more information on how to fix the P16D2 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P16D2 GMC code diagnosed by a professional: Find a repair shop in your area

Code P16D2 GMC comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the P16D2 GMC code? Have you replaced any parts?
Any information is appreciated. Thanks