Cylinder 4 Deactivation/Intake Valve Control Circuit Performance

Where it lives

For P3426, start at the valve the description names. The description of P3426 puts it on cylinder 4.

Check these first

• A cylinder 4 intake valve control solenoid that moves but not as commanded
• A sticking or binding cylinder 4 intake valve
• Low or dirty engine oil affecting cylinder 4 intake valve control
• High resistance in the cylinder 4 intake valve control wiring
• Worn mechanical parts in the cylinder 4 intake valve control linkage

What to do next

1. Read the cylinder 4 intake valve control status on a scan tool
2. Compare the commanded and actual cylinder 4 intake valve control position
3. Check the engine oil level and condition
4. Test the cylinder 4 intake valve control circuit for added resistance
5. Replace the cylinder 4 intake valve control solenoid if the output stays skewed
6. Clear the code and retest

Look up another code