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P3412 OBD-II Trouble Code: Cylinder 2 Deactivation/Intake Valve Control Circuit High

check engine light

P3412 code definition

The P3412 Trouble Code refers to cylinder 2 deactivation/intake valve control circulation high.

What the P3412 code means

When the powertrain control module discovers that the measured voltage values from the MAF sensor, the TP sensor, and the MAP sensor are not within the specified range from the manufacturer, this code will appear.

What causes the P3412 code?

The P3412 code could appear for a number of different reasons. The following are some of the potential causes:

  • Low oil pressure.
  • Restricted oil passage.
  • Faulty cylinder deactivation solenoid.
  • Poor engine condition.
  • Open or shorted cylinder deactivation solenoid.
  • Bad electrical connection with the cylinder deactivation solenoid circuit.

How does a mechanic diagnose the P3412 code?

A mechanic will want to use an OBD-II scanner when they are diagnosing problems with your vehicle. They will connect the scanner to the vehicle’s computer, and this will collect information on the vehicle’s condition. The mechanic can learn quite a bit from the data that they gather. The mechanic will always want to reset the code as well, and then run the car as a test to see if the code returns. In some cases, the code might have been stored by accident. This can often happen with older vehicles that are out there and still running. If the code returns though, the mechanic knows there are actual repairs to do.

What repairs can fix the P3412 code?

The following are some of the repairs that the mechanic might do to help fix the P3412 code:

  • Check the system with an OBD-II scanner.
  • Reset the system to see if the code returns.
  • Check the wiring for proper connections, shorts, and corrosion.

Additional comments for consideration regarding the P3412 code

You never want to ignore any issues with your vehicle no matter how large or small they might be. It is important to take your vehicle in for maintenance and to clear codes as soon as they appear. This ensures you are keeping on top of your vehicle’s maintenance so it can last a long time. Even if you have an older vehicle and you believe that your warning lights might be coming on because of the age of the vehicle and because it is just the PCM sensors malfunctioning, you should never take the chance. You need to be working with a qualified mechanic.

Need help with a P3412 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
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