Cylinder 6 Deactivation/Intake Valve Control Circuit/Open
Code P3441 indicates a problem in the cylinder deactivation system for cylinder 6, specifically an open or malfunction in the intake valve control circuit. This system, often found in engines with Active Fuel Management (AFM) or Variable Cylinder Management (VCM), uses solenoids to disable valve lift when cylinders are deactivated for fuel economy. An open circuit means the solenoid or its wiring has failed, preventing proper valve control and causing the cylinder to remain active or malfunction.
01. Most Common Causes
- Faulty cylinder deactivation solenoid for cylinder 6
- Open or shorted wiring in the intake valve control circuit
- Corroded or damaged connector at the solenoid
- Engine control module (ECM) failure
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Rough idle or misfire
- Reduced fuel economy
- Loss of engine power
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to confirm code P3441 and check for related codes.
Step 2: Visually inspect the wiring and connector for cylinder 6 deactivation solenoid for damage or corrosion.
Step 3: Test the solenoid resistance with a multimeter; compare to manufacturer specs (typically 20-30 ohms).
Step 4: Check for voltage at the solenoid connector with the engine running; if no voltage, trace circuit back to ECM.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as it can cause misfires, reduced fuel economy, and potential catalytic converter damage. Have it diagnosed promptly.
How much does it cost to fix?▼
Repair costs typically range from $50 to $150 for a DIY solenoid replacement, or $200-$400 at a shop including labor and diagnostics.