P3428 2014 GMC Sierra Code - Cylinder 4 Deactivation Solenoid Valve Control Circuit High Voltage
Quick Answer
The P3428 diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the Cylinder 4 Deactivation Solenoid Valve Control Circuit High Voltage. Common causes include Short circuit in the control circuit of the solenoid valve, Faulty cylinder 4 deactivation solenoid valve, Damaged wiring or connectors in the 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
- P3428 2014 GMC Sierra indicates Cylinder 4 Deactivation Solenoid Valve Control Circuit High Voltage.
- Common causes
- Common causes include Short circuit in the control circuit of the solenoid valve, Faulty cylinder 4 deactivation solenoid valve, Damaged wiring or connectors in the 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 P3428 2014 GMC Sierra Description
The P3428 diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the Cylinder 4 Deactivation Solenoid Valve Control Circuit High Voltage. This code indicates that there is a high voltage condition detected in the control circuit of the cylinder 4 deactivation solenoid valve. In modern engines, cylinder deactivation technology is used to improve fuel efficiency by shutting down specific cylinders under light load conditions. The solenoid valve controls the oil flow to deactivate the cylinder, and a high voltage in the control circuit can disrupt this process.
Common Causes of P3428 2014 GMC Sierra
- Short circuit in the control circuit of the solenoid valve.
- Faulty cylinder 4 deactivation solenoid valve.
- Damaged wiring or connectors in the control circuit.
- Malfunctioning engine control module (ECM).
- Electrical issues such as a blown fuse or relay.
Symptoms of P3428 2014 GMC Sierra
- Check Engine Light illuminated on the dashboard.
- Engine misfires or rough idling.
- Reduced power and acceleration.
- Decreased fuel efficiency.
- Engine may run rough or stall at idle.
How to Fix P3428 2014 GMC Sierra
- Begin by using a scan tool to diagnose the specific cause of the high voltage in the solenoid valve control circuit.
- Inspect the wiring and connectors for any damage or corrosion. Repair or replace as necessary.
- Test the cylinder 4 deactivation solenoid valve for proper operation. Replace if faulty.
- Check the engine control module (ECM) for any signs of malfunction. Reset or replace if needed.
- Clear the DTC and perform a test drive to ensure the issue has been resolved.
Cost to Fix P3428 2014 GMC Sierra
The typical repair costs for addressing a P3428 code on a 2014 GMC Sierra can vary depending on the specific cause of the issue. Parts such as a new solenoid valve or ECM can range from $100 to $500, while labor costs may be between $100 and $300. Overall, the total repair cost could range from $200 to $800. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.
Need more information about the P3428 2014 GMC Sierra code?
Need more information on how to fix the P3428 2014 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P3428 2014 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P3428 2014 GMC Sierra Code
1. What does the OBDII code P3428 mean on a 2014 GMC Sierra?
P3428 indicates an issue with the Cylinder 4 Deactivation Solenoid Valve Control Circuit, specifically that it is detecting high voltage.
2. What are the common symptoms of code P3428 on a 2014 GMC Sierra?
Symptoms may include a check engine light, reduced engine performance, rough idling, misfires, and decreased fuel efficiency.
3. What causes the P3428 code to appear on my 2014 GMC Sierra?
Common causes include a faulty cylinder deactivation solenoid, wiring issues such as damaged or shorted wires, a malfunctioning ECM, or low engine oil pressure.
4. Can I drive my 2014 GMC Sierra with the P3428 code?
Driving with this code is not recommended, as it may lead to engine performance issues and potential long-term damage to the engine or other components.
5. How is the P3428 code diagnosed on a 2014 GMC Sierra?
Diagnosis typically involves scanning for codes, inspecting the cylinder 4 deactivation solenoid and its wiring, checking the ECM, and testing engine oil pressure.
6. How do I fix the P3428 code on a 2014 GMC Sierra?
Potential fixes include replacing the cylinder 4 deactivation solenoid, repairing or replacing damaged wiring, addressing low oil pressure, or reprogramming or replacing the ECM if necessary.
7. Is the P3428 code related to the Active Fuel Management (AFM) system?
Yes, the code is directly related to the AFM system, as it involves the deactivation of cylinder 4 to improve fuel efficiency.
8. Could low oil pressure cause the P3428 code on my 2014 GMC Sierra?
Yes, low oil pressure can prevent proper operation of the deactivation solenoid, leading to this code.
9. How much does it cost to repair the P3428 code on a 2014 GMC Sierra?
Repair costs vary, but replacing the solenoid typically costs $150–$300, while wiring repairs or ECM replacement may increase the cost.
10. Can a faulty ECM trigger the P3428 code on a 2014 GMC Sierra?
Yes, a malfunctioning ECM could send incorrect signals to the solenoid, resulting in the P3428 code.
Discuss the causes and fixes for P3428 2014 GMC Sierra OBDII Code
Code P3428 2014 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.