OBD Guide

P3412

Cylinder 2 Deactivation/Intake Valve Control Circuit High

P3412 is an OBD-II diagnostic trouble code meaning: Cylinder 2 Deactivation/Intake Valve Control Circuit High. Common causes: malfunction of the cylinder deactivation solenoid valve, open or short circuit in control circuit. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Increased fuel consumption
  • Uneven engine operation
  • Check Engine light comes on
  • Reduced engine power
  • Possible misfire in cylinder 2

Causes

  • Malfunction of the cylinder deactivation solenoid valve
  • Open or short circuit in control circuit
  • Poor contact in control circuit connectors
  • Engine control unit malfunction
  • Mechanical problems with the timing system

How to Fix

  1. Check the condition of the cylinder deactivation solenoid valve
  2. Check the integrity of the control circuit and the quality of connections
  3. Check the resistance and operation of the solenoid valve
  4. Scan the engine control module for additional errors
  5. If necessary, replace faulty components

Related codes

Error P3412 by Vehicle Brand

FAQ

What does the P3412 code mean?

P3412 is an OBD-II diagnostic trouble code that indicates: Cylinder 2 Deactivation/Intake Valve Control Circuit High

What causes a P3412 error code?

The most common causes of P3412 include: Malfunction of the cylinder deactivation solenoid valve; Open or short circuit in control circuit; Poor contact in control circuit connectors; Engine control unit malfunction.

How do I fix a P3412 diagnostic trouble code?

To fix P3412: Check the condition of the cylinder deactivation solenoid valve. Check the integrity of the control circuit and the quality of connections. Check the resistance and operation of the solenoid valve. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P3412?

Yes, but get it checked soon

How much does it cost to fix P3412?

The estimated repair cost for P3412 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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