P3444 2018 GMC Sierra Code - Cylinder 6 Deactivation Solenoid Valve Control Circuit High Voltage
Quick Answer
The P3444 diagnostic trouble code (DTC) indicates an issue with the Cylinder 6 Deactivation Solenoid Valve Control Circuit in a 2018 GMC Sierra. Common causes include Faulty Cylinder 6 Deactivation Solenoid Valve, Wiring or connector issues in the control circuit, ECM malfunction or software glitch. 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 2018 GMC Sierra indicates Cylinder 6 Deactivation Solenoid Valve Control Circuit High Voltage.
- Common causes
- Common causes include Faulty Cylinder 6 Deactivation Solenoid Valve, Wiring or connector issues in the control circuit, ECM malfunction or software glitch.
- 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 2018 GMC Sierra Description
The P3444 diagnostic trouble code (DTC) indicates an issue with the Cylinder 6 Deactivation Solenoid Valve Control Circuit in a 2018 GMC Sierra. This code specifically points to a high voltage in the control circuit, which can disrupt the normal operation of the cylinder deactivation system. In modern vehicles, cylinder deactivation technology is utilized to improve fuel efficiency by shutting down specific cylinders when they are not needed, such as during light load driving conditions. This helps reduce fuel consumption and emissions while maintaining adequate power output.
Common Causes of P3444 2018 GMC Sierra
- Faulty Cylinder 6 Deactivation Solenoid Valve
- Wiring or connector issues in the control circuit
- ECM malfunction or software glitch
- High voltage spikes in the electrical system
- Environmental factors such as moisture or corrosion
Symptoms of P3444 2018 GMC Sierra
- Reduced fuel efficiency
- Engine misfires or rough idle
- Loss of power or acceleration
- Illumination of the check engine light
- Engine overheating or increased emissions
How to Fix P3444 2018 GMC Sierra
- Perform a thorough diagnostic scan using a professional OBD-II scanner to confirm the P3444 code and pinpoint the exact cause of the issue.
- Inspect the wiring and connectors related to the Cylinder 6 Deactivation Solenoid Valve Control Circuit for any damage, corrosion, or loose connections.
- Test the solenoid valve itself to determine if it is functioning correctly or needs replacement.
- Check the ECM for any software updates or malfunctions that may be affecting the control circuit.
- Clear the DTC and reset the ECM after completing the necessary repairs to ensure the issue is resolved.
Cost to Fix P3444 2018 GMC Sierra
The typical repair costs for addressing the P3444 code in a 2018 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing a faulty solenoid valve or repairing wiring/connectors may cost between $150 to $300, including parts and labor. Diagnostic time and labor rates at auto repair shops can fluctuate between $80 and $150 per hour, so it is advisable to check with local shops for accurate pricing. Keep in mind that additional costs may apply if the ECM needs reprogramming or replacement.
Need more information about the P3444 2018 GMC Sierra code?
Need more information on how to fix the P3444 2018 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P3444 2018 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P3444 2018 GMC Sierra Code
1. What does the OBDII code P3444 mean on a 2018 GMC Sierra?
P3444 indicates a high voltage issue in the Cylinder 6 Deactivation Solenoid Valve Control Circuit, which is part of the Active Fuel Management (AFM) system.
2. What are the common symptoms of a P3444 code?
Symptoms may include reduced engine performance, poor fuel economy, the check engine light turning on, rough idling, or misfires.
3. What causes the P3444 code to appear?
The most common causes are a faulty cylinder deactivation solenoid, damaged wiring or connectors in the solenoid circuit, or a malfunctioning engine control module (ECM).
4. Can I drive my GMC Sierra with a P3444 code?
While it may be possible to drive with this code, it’s not recommended as it could lead to further engine damage or reduced fuel efficiency.
5. How do I diagnose a P3444 code on my GMC Sierra?
Begin by inspecting the wiring and connectors for damage or corrosion. Use a multimeter to test the solenoid for proper voltage and resistance. If necessary, scan the ECM for additional fault codes.
6. How is a P3444 code typically fixed?
Repairs may include replacing the Cylinder 6 Deactivation Solenoid, repairing or replacing damaged wiring, or reprogramming or replacing the ECM if it’s faulty.
7. What tools are needed to fix a P3444 code?
You’ll need an OBDII scanner, a multimeter, and possibly basic hand tools for accessing and replacing components.
8. How much does it cost to repair a P3444 code?
Repair costs vary but typically range from $100 to $300 for parts and labor, depending on whether the solenoid or wiring needs replacement.
9. Can a bad oil condition cause a P3444 code?
Yes, low or dirty oil can restrict the operation of the solenoid in the AFM system, potentially triggering this code.
10. Will clearing the code fix the problem?
Simply clearing the code won’t fix the underlying issue. The root cause must be identified and repaired to prevent the code from returning.
Discuss the causes and fixes for P3444 2018 GMC Sierra OBDII Code
Code P3444 2018 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.