P3444 2016 GMC Sierra Code - Cylinder 6 Deactivation Solenoid Valve Control Circuit High Voltage
Quick Answer
The P3444 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a problem with the Cylinder 6 Deactivation Solenoid Valve Control Circuit, specifically reporting high voltage. Common causes include Faulty Solenoid Valve: The solenoid valve responsible for controlling the flow of oil to the lifters may be defective, Wiring Issues: Corrosion, damage, or poor connections in the wiring harness related to the solenoid valve control circuit can trigger the P3444 code, PCM Malfunction: A malfunctioning Powertrain Control Module (PCM) may incorrectly detect high voltage in the solenoid valve control circuit. 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
- P3444 2016 GMC Sierra indicates Cylinder 6 Deactivation Solenoid Valve Control Circuit High Voltage.
- Common causes
- Common causes include Faulty Solenoid Valve: The solenoid valve responsible for controlling the flow of oil to the lifters may be defective, Wiring Issues: Corrosion, damage, or poor connections in the wiring harness related to the solenoid valve control circuit can trigger the P3444 code, PCM Malfunction: A malfunctioning Powertrain Control Module (PCM) may incorrectly detect high voltage in the solenoid valve control circuit.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P3444 2016 GMC Sierra Description
The P3444 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a problem with the Cylinder 6 Deactivation Solenoid Valve Control Circuit, specifically reporting high voltage. In modern vehicles like the GMC Sierra, cylinder deactivation technology is used to improve fuel efficiency by shutting down specific cylinders when they are not needed, such as during light load conditions. The deactivation solenoid valve controls the flow of oil to the lifters that deactivate the cylinder.
Common Causes of P3444 2016 GMC Sierra
- Faulty Solenoid Valve: The solenoid valve responsible for controlling the flow of oil to the lifters may be defective.
- Wiring Issues: Corrosion, damage, or poor connections in the wiring harness related to the solenoid valve control circuit can trigger the P3444 code.
- PCM Malfunction: A malfunctioning Powertrain Control Module (PCM) may incorrectly detect high voltage in the solenoid valve control circuit.
- Oil Pressure Problems: Issues with oil pressure can affect the proper functioning of the cylinder deactivation system.
Symptoms of P3444 2016 GMC Sierra
- Check Engine Light: The most common symptom associated with the P3444 code is the illumination of the Check Engine Light on the vehicle's dashboard.
- Rough Idle: The engine may experience rough idling or vibrations when the cylinder deactivation system is not functioning properly.
- Reduced Fuel Efficiency: A malfunctioning cylinder deactivation solenoid valve can lead to decreased fuel efficiency as the engine may not be operating optimally.
- Engine Misfires: High voltage in the control circuit can cause the engine to misfire, leading to a noticeable decrease in performance.
How to Fix P3444 2016 GMC Sierra
- Diagnose the Issue: Use a scan tool to retrieve the DTC and perform a thorough inspection of the solenoid valve, wiring, and PCM to identify the root cause of the problem.
- Replace Solenoid Valve: If the solenoid valve is found to be faulty, it should be replaced with a new one to restore proper operation of the cylinder deactivation system.
- Repair Wiring: Address any wiring issues by repairing damaged wires, cleaning connections, and ensuring proper electrical continuity.
- Check Oil Pressure: Verify that the engine's oil pressure is within the manufacturer's specifications to ensure proper operation of the cylinder deactivation system.
Cost to Fix P3444 2016 GMC Sierra
The cost of repairing the Cylinder 6 Deactivation Solenoid Valve Control Circuit High Voltage issue can vary depending on the specific cause of the problem and the labor rates in your area. Generally, the cost of replacing a solenoid valve can range from $150 to $300, while addressing wiring issues may cost between $100 to $200. Diagnostic time and labor rates at auto repair shops can vary, with hourly rates typically falling between $80 and $150. It's advisable to consult with a trusted mechanic to get an accurate estimate for your specific situation.
Need more information about the P3444 2016 GMC Sierra code?
Need more information on how to fix the P3444 2016 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P3444 2016 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P3444 2016 GMC Sierra Code
Q: What does OBDII code P3444 mean on a 2016 GMC Sierra?
1. **A:** Code P3444 indicates a high voltage issue in the Cylinder 6 Deactivation Solenoid Valve Control Circuit, related to the Active Fuel Management (AFM) system. 2.
Q: What are the common symptoms of code P3444 in a GMC Sierra?
**A:** Symptoms may include reduced engine performance, poor fuel economy, rough idling, and the Check Engine Light being illuminated. 3.
Q: What causes the P3444 code to appear on a 2016 GMC Sierra?
**A:** Common causes include a faulty cylinder deactivation solenoid, wiring issues such as shorts or corrosion, a malfunctioning ECM, or low oil pressure. 4.
Q: How does the Cylinder 6 Deactivation Solenoid affect engine performance?
**A:** The solenoid controls the deactivation of Cylinder 6 during certain driving conditions to improve fuel efficiency. A fault can prevent proper operation, impacting performance and efficiency. 5.
Q: Can I drive my GMC Sierra with a P3444 code?
**A:** Driving is possible but not recommended, as it may result in further engine damage, reduced performance, and increased fuel consumption. 6.
Q: How is the P3444 code diagnosed on a 2016 GMC Sierra?
**A:** Diagnosis involves scanning the vehicle for codes, checking the solenoid and its wiring for damage or corrosion, and testing oil pressure to ensure proper operation of the AFM system. 7.
Q: What repairs are needed to fix the P3444 code?
**A:** Repairs may include replacing the Cylinder 6 deactivation solenoid, repairing damaged wiring, cleaning corroded connections, or updating/replacing the ECM if necessary. 8.
Q: Can low oil pressure cause the P3444 code?
**A:** Yes, low oil pressure can prevent the AFM system from functioning correctly, leading to this code. Ensuring proper oil levels and pressure is essential. 9.
Q: How much does it cost to fix a P3444 code on a GMC Sierra?
**A:** Repair costs vary depending on the issue but typically range from $150 to $400 for solenoid replacement or wiring repairs. ECM replacement, if needed, can be more expensive. 10.
Q: How can I prevent the P3444 code from occurring again?
**A:** Regularly maintain your vehicle, use the correct oil type, keep oil levels adequate, and inspect electrical connections for damage or corrosion.
Discuss the causes and fixes for P3444 2016 GMC Sierra OBDII Code
Code P3444 2016 GMC Sierra 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.