AutoCodes – Chevrolet – P16D2 Chevrolet

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

Quick Answer

The rocker arm actuator system enables the Engine Control Module (ECM) to change the camshaft lift and duration while the engine is operating. Common causes include 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. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P16D2 Chevrolet indicates Intake Rocker Arm Solenoid Valve 2 Control Circuit Low Voltage.
Common causes: Common causes include 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.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 2,241

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 10, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P16D2 Chevrolet 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 Chevrolet - Intake Rocker Arm Solenoid Valve 2 Control Circuit Low Voltage - AutoCodes.com — P16D2 Chevrolet Code - Intake Rocker Arm Solenoid Valve 2 Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P16D2 Chevrolet?

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

How to Fix the DTC P16D2 Chevrolet?

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P16D2 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P16D2 Chevrolet Code

1. What are the common symptoms of OBDII code P16D2 for the Intake Rocker Arm Solenoid Valve 2 Control Circuit Low Voltage in a Chevrolet?

The common symptoms include rough idling, decreased engine performance, and the illumination of the Check Engine light on the dashboard.

2. What are the possible causes of OBDII code P16D2 on a Chevrolet related to the Intake Rocker Arm Solenoid Valve 2 Control Circuit Low Voltage?

Possible causes include a faulty intake rocker arm solenoid valve, damaged wiring or connectors, low engine oil level, or a malfunctioning Engine Control Module (ECM).

3. How can I diagnose the issue causing OBDII code P16D2 on my Chevrolet for the Intake Rocker Arm Solenoid Valve 2 Control Circuit Low Voltage?

Diagnosis involves checking the intake rocker arm solenoid valve for proper operation, inspecting the wiring and connectors for any damage, verifying the engine oil level is sufficient, and scanning the ECM for any related trouble codes.

4. Can I continue driving my Chevrolet with OBDII code P16D2 for the Intake Rocker Arm Solenoid Valve 2 Control Circuit Low Voltage illuminated?

It is not recommended to continue driving with this code as it can lead to further engine damage and decreased performance. It is best to address the issue promptly.

5. How can I repair OBDII code P16D2 on my Chevrolet for the Intake Rocker Arm Solenoid Valve 2 Control Circuit Low Voltage?

Repair options include replacing the intake rocker arm solenoid valve if faulty, repairing any damaged wiring or connectors, ensuring the engine oil level is correct, and clearing the trouble code with a scan tool.

6. Is it possible to reset OBDII code P16D2 on a Chevrolet for the Intake Rocker Arm Solenoid Valve 2 Control Circuit Low Voltage without fixing the underlying issue?

Resetting the code without addressing the underlying issue may temporarily turn off the Check Engine light, but the problem will likely reoccur. It is best to diagnose and repair the root cause.

7. Will OBDII code P16D2 affect the fuel efficiency of my Chevrolet due to the Intake Rocker Arm Solenoid Valve 2 Control Circuit Low Voltage issue?

Yes, this code can impact fuel efficiency as it can cause the engine to run inefficiently, leading to increased fuel consumption. Addressing the problem promptly can help maintain optimal fuel efficiency.

8. How long does it typically take to repair OBDII code P16D2 on a Chevrolet related to the Intake Rocker Arm Solenoid Valve 2 Control Circuit Low Voltage?

The repair time can vary depending on the exact cause of the issue. Simple fixes like replacing the solenoid valve or repairing wiring may take a few hours, while more complex problems could require more time.

9. Can a DIY enthusiast fix OBDII code P16D2 for the Intake Rocker Arm Solenoid Valve 2 Control Circuit Low Voltage on a Chevrolet?

Depending on the individual's skill level and access to tools, a DIY enthusiast may be able to address this code by following repair guides and using the proper diagnostics tools. However, if unsure, it is recommended to seek professional assistance.

10. Are there any preventive measures to avoid OBDII code P16D2 on a Chevrolet for the Intake Rocker Arm Solenoid Valve 2 Control Circuit Low Voltage in the future?

Regularly checking and maintaining the engine oil level, inspecting the wiring and connectors for any signs of wear, and following the manufacturer's recommended service intervals can help prevent issues leading to this trouble code.