P3412 - OBD Trouble Code

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The trouble code P3412 can be described as Cylinder 2 Deactivation/Intake Valve Control Circuit High. The error code P3412 would start triggering when the PCM would detect some fault in cylinder 2 deactivation/intake valve control circuit. One thing which you must keep in mind that its symptoms as well as causes would surely vary as it depends upon a number of things.

There are a number of fuel and emissions standards, so in an effort to meet that lot of manufacturers are using the cylinder deactivation systems. This system would allow the engine control module (PCM) to disable select cylinders when additional power is not required from the engine, such as at idle or when cruising on the highway. Now if the engine control module (PCM) would decide that the intake valve for cylinder number two is not turning on or off the way is being commanded, then the powertrain control module would set up this fault code. The P3412 trouble code would indicate that a cylinder 2 deactivation/intake valve control circuit which is not as per the predetermined limit has been detected by the ECM. Now when this would occur, the fault code would be stored and there would be an illumination of the malfunction indicator light.

What causes this problem with the Cylinder 2 Deactivation/Intake Valve Control Circuit High?

• There might be low oil pressure
  
• Constricted oil passage
• Engine mechanical condition might be flawed
• Defaults in the cylinder deactivation solenoid
• Cylinder deactivation solenoid harness is open or shorted
• Cylinder deactivation solenoid circuit poor electrical connection

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2. Powertrain Control Module - The PCM works as the central computer system in an automobile’s mechanism. This auto part is in charge of all the constituents as well as the functions performed by them. Having such enormous importance in the operation of all the parts means that any defect in it will affect almost every aspect of a car.
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Our main motive is to achieve customer satisfaction and that’s why we will help you to diagnose P3412 code by mentioning some major symptoms below:

Common Symptoms

• Illumination in the service engine soon light
• Engine misfire related issues
• Rising fuel consumption
• Declining engine performance
• Flashing up of the service engine soon light

If you wish to correct this fault code, then you have to follow certain steps. Correcting a problem needs your careful attention. Here are some ways with the help of which you will be able to correct the OBD Code P3412:

• It is essential to clean the blocked oil passages
• Repair or replace the quirky ECM
• Carefully clean the corrosion from connectors
• The oil and filter should be changed
• It is necessary to perform proper service of the unsound wiring
• Adjust the flawed deactivation solenoid

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Here are some steps which you should follow in order to diagnose this fault code:

• Use an OBD-II scanner in order to verify that the code is present, and check for other codes for any other type of error or problem that might need attention.
• The current data along with freeze frame data are recorded, and the codes are then cleared to see if they reoccur.
• The vehicle is inspected for any problems with the wiring and connectors to check for loose connections, corrosion, or shorts.
• The tests related to the cylinder 2 deactivation/intake valve control circuit and components may help pinpoint the problem, as well as inspection of the current sensor and cut off switch will further helping the cause.
• The P3412 error is triggered if there is a physical problem with the cylinder 2 deactivation/intake valve control circuit which could cause the engine performance to go off.

Common Mistakes When Diagnosing The P3412 Code

• There can be a failure in the powertrain control module
• Defaults in the PCM
• Some issues related to the wiring
• Variable valve timing solenoid failure