P16D2 Buick 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 Buick 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.
Code P16D2 Buick Description
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.
What are the Possible Causes of the DTC P16D2 Buick?
- 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 Buick?
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 Buick 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.
Need more information about the P16D2 Buick code?
Need more information on how to fix the P16D2 Buick code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P16D2 Buick code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P16D2 Buick Code
1. What does the OBDII code P16D2 mean for a Buick?
P16D2 indicates a problem with the Intake Rocker Arm Solenoid Valve 2 Control Circuit, specifically that the voltage is lower than expected.
2. What are the common symptoms of the P16D2 code?
Symptoms may include engine misfires, rough idling, reduced power, poor fuel economy, and the check engine light being illuminated.
3. What causes the P16D2 code to appear?
Possible causes include a faulty intake rocker arm solenoid valve, damaged wiring or connectors, low engine oil pressure, or an issue with the vehicle's PCM (Powertrain Control Module).
4. How can I diagnose the P16D2 code?
Start by inspecting the solenoid valve wiring and connectors for damage or corrosion, checking engine oil levels, and testing the solenoid for proper operation using a multimeter.
5. Can low engine oil cause the P16D2 code?
Yes, low or dirty engine oil can lead to insufficient pressure for the solenoid to function properly, triggering the code.
6. How do I fix the P16D2 code on my Buick?
Repairs may include replacing the intake rocker arm solenoid valve, repairing or replacing damaged wiring, cleaning electrical connectors, or addressing engine oil issues.
7. Is it safe to drive with the P16D2 code?
Driving with this code is not recommended as it can lead to engine performance issues, increased wear, and further damage if left unresolved.
8. How much does it cost to fix the P16D2 code?
Repair costs can vary but typically range from $100 to $400, depending on whether the solenoid valve or wiring needs to be replaced.
9. Can I clear the P16D2 code without fixing the underlying issue?
While you can clear the code with an OBDII scanner, it will likely return if the root cause is not addressed.
10. Could a faulty PCM cause the P16D2 code?
Yes, though it is less common, a malfunctioning PCM may fail to properly control the solenoid circuit, triggering the code.
Discuss the causes and fixes for P16D2 Buick OBDII Code
Code P16D2 Buick comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
