OBD Codes List

Diagnostic reference · P3412

P3412

Cylinder 2 Deactivation/Intake Valve Control Circuit High

System
Auxiliary emission controls (P code)
Lamp
Check Engine Light
Category
Powertrain - Auxiliary Emissions Controls

What it means

P3412 means Cylinder 2 Deactivation/Intake Valve Control Circuit High.

Where it lives

For P3412, the circuit described runs through the valve. The description of P3412 puts it on cylinder 2.

Check these first

  • A short to voltage on the cylinder 2 intake valve control circuit
  • An open ground at the cylinder 2 intake valve control solenoid
  • A failed cylinder 2 intake valve control solenoid
  • A failed driver in the control module for the cylinder 2 intake valve circuit
  • A chafed cylinder 2 intake valve control wire touching voltage

What to do next

  1. Read the cylinder 2 intake valve control status on a scan tool
  2. Command the cylinder 2 intake valve control solenoid on and off
  3. Test the cylinder 2 intake valve control circuit for a short to voltage
  4. Check the cylinder 2 intake valve control ground for continuity
  5. Replace the cylinder 2 intake valve control solenoid if the circuit tests good
  6. Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.