AutoCodesChevrolet – P16D0 Chevrolet

P16D0 Chevrolet Code - Intake Rocker Arm Solenoid Valve 2 Stuck Off

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
P16D0 Chevrolet indicates Intake Rocker Arm Solenoid Valve 2 Stuck Off.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 68,174
How popular is this code, among other codes? Medium
Table of contents Created and updated by William Orellana on Jan 10, 2020
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Code P16D0 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 P16D0 Chevrolet - Intake Rocker Arm Solenoid Valve 2 Stuck Off - AutoCodes.com
P16D0 Chevrolet Code - Intake Rocker Arm Solenoid Valve 2 Stuck Off

What are the Possible Causes of the DTC P16D0 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 P16D0 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P16D0 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 P16D0 Chevrolet Code

1. What does the OBDII code P16D0 mean on a Chevrolet?

P16D0 indicates that the Intake Rocker Arm Solenoid Valve 2 is stuck in the "off" position, which affects the engine's ability to adjust valve timing.

2. What are the symptoms of the P16D0 code on a Chevrolet?

Symptoms may include rough idle, reduced engine performance, poor fuel economy, and an illuminated check engine light.

3. What causes the P16D0 code to appear on a Chevrolet?

Common causes include a faulty intake rocker arm solenoid valve, clogged oil passages, low oil pressure, or wiring and connector issues.

4. Can I drive my Chevrolet with the P16D0 code?

Driving with this code is not recommended, as it may lead to engine performance issues or further damage to internal components.

5. How do I diagnose the P16D0 code on my Chevrolet?

Diagnosis involves checking the intake rocker arm solenoid valve for proper operation, inspecting wiring and connectors, and verifying oil pressure and condition.

6. How can I fix the P16D0 code on a Chevrolet?

Repairs may include replacing the intake rocker arm solenoid valve, cleaning or unclogging oil passages, performing an oil change, or repairing damaged wiring.

7. Is low oil pressure a potential cause of the P16D0 code?

Yes, low oil pressure can reduce the solenoid’s ability to function properly, triggering the P16D0 code.

8. How much does it cost to repair the P16D0 code on a Chevrolet?

Repair costs vary but typically range from $150 to $500, depending on whether parts like the solenoid valve need replacement or additional repairs are required.

9. Can a dirty or clogged oil filter trigger the P16D0 code?

Yes, a dirty or clogged oil filter can restrict oil flow, potentially causing the solenoid to malfunction and triggering the code.

10. How can I prevent the P16D0 code from occurring?

Regular oil changes, using the correct oil type, and maintaining clean oil passages can help prevent this code from occurring.

Discuss the causes and fixes for P16D0 Chevrolet OBDII Code

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