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Engine-Codes – Generic – P3425

P3425 Code - Cylinder 4 Deactivation Solenoid Valve Control Circuit

Quick Answer

The P3425 diagnostic trouble code (DTC) refers to an issue with the Cylinder 4 Deactivation Solenoid Valve Control Circuit. Common causes include Faulty Cylinder 4 Deactivation Solenoid Valve, Wiring issues in the control circuit, Malfunctioning engine control module (ECM). 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
P3425 indicates Cylinder 4 Deactivation Solenoid Valve Control Circuit.
Common causes
Common causes include Faulty Cylinder 4 Deactivation Solenoid Valve, Wiring issues in the control circuit, Malfunctioning engine control module (ECM).
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P3425 Description

The P3425 diagnostic trouble code (DTC) refers to an issue with the Cylinder 4 Deactivation Solenoid Valve Control Circuit. This code is typically found in vehicles equipped with a cylinder deactivation system, which allows the engine to deactivate specific cylinders to improve fuel efficiency during light load conditions. The solenoid valve controls the flow of oil to activate or deactivate the cylinder, and when the control circuit malfunctions, it can lead to performance issues and potentially cause long-term damage to the engine.

OBDII Code P3425 - Cylinder 4 Deactivation Solenoid Valve Control Circuit
P3425 Code - Cylinder 4 Deactivation Solenoid Valve Control Circuit

Common Causes of P3425

  1. Faulty Cylinder 4 Deactivation Solenoid Valve
  2. Wiring issues in the control circuit
  3. Malfunctioning engine control module (ECM)
  4. Poor electrical connection in the circuit
  5. Accumulated debris or sludge in the solenoid valve

Symptoms of P3425

  1. Decreased fuel efficiency
  2. Rough idling
  3. Engine misfires
  4. Lack of power during acceleration
  5. Check Engine Light illuminated on the dashboard

How to Fix P3425

  1. Use a scan tool to diagnose the specific cause of the code.
  2. Inspect the wiring and connections in the control circuit for any damage or corrosion.
  3. Test the solenoid valve to determine if it is functioning properly.
  4. Replace the faulty solenoid valve or repair any wiring issues as needed.
  5. Clear the code and perform a test drive to ensure the issue has been resolved.

Cost to Fix P3425

The cost of repairing the Cylinder 4 Deactivation Solenoid Valve Control Circuit can vary depending on the cause of the issue and the specific parts needed for the repair. On average, the cost of replacing a solenoid valve can range from $150 to $300, while the labor costs for the repair can amount to $100 to $200. It's important to note that these are rough estimates, and actual repair costs may differ based on factors such as location, vehicle make and model, and the specific repair shop. Consulting with a professional mechanic for a more accurate cost estimate is recommended.

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Code P3425 Information for Specific Makes

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.

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