Skip the auto shop - Our mechanics make house calls

P3484 OBD-II Trouble Code: Cylinder 11 Deactivation/Intake Valve Control Circuit High

Check Engine Light

P3484 code definition

The P3484 code indicates that the PCM has detected a range of voltage readings for the cylinder deactivation mode within cylinder 11 that is too high compared to the manufacturer’s specifications.

What the P3484 code means

The ECM regulates fuel economy by commanding certain cylinders to deactivate during certain driving conditions. During the deactivation command of cylinder 11, a signal is sent to the PCM informing it of the current operation efficiency via a voltage reading. If the voltage reading is too high compared to manufacturer specifications, the PCM will store the P3484 code.

What causes the P3484 code?

There are quite a few things that can cause the P3484 code. Those include:

  • Low oil pressure
  • Faulty cylinder deactivation solenoid
  • Faulty electrical components within the cylinder deactivation solenoid circuit
  • Restricted oil passage
  • Fault within the engine mechanical condition

What are the symptoms of the P3484 code?

In most cases, only the illuminated Check Engine Light will be present with the P3484 code.

How does a mechanic diagnose the P3484 code?

After verifying the code with an OBD-II scanner, a mechanic should first perform a visual inspection of all the electrical components. Any loose, corroded, short, or damaged components should be repaired or replaced as necessary. The code should then be cleared from the PCM, and the system should be retested. If the code returns to the PCM, the mechanic should then proceed to test each potentially faulty component until the proper diagnosis is found.

How serious is the P3484 code?

This code represents an issue that should be dealt with immediately. The fault that causes the P3484 code can quickly create larger issues that will require more expensive repairs in the future.

What repairs can fix the P3484 code?

Repairs that may be performed to fix the P3484 code include:

Need help with a P3484 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
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

Post a question and get free advice from our certified mechanics.

ASK A QUESTION

More related articles

Auto Safety Tips
Driving is more than a way to get from point A to point B. Owning and driving a car can also be a highly enjoyable experience. Whether a person is driving...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P0291OBD-II Trouble Code: Cylinder 11 Injector Circuit Low
P0291 code definition When your vehicle’s PCM registers the P0291 code, it means that a voltage reading came from the fuel injector circuit – for cylinder number 11’s fuel injector –...


Related questions

Q: A.I.R. pump is missing in my car

Hello. The A.I.R. system is an emissions system that is designed to inject air into the exhaust manifold to help with the combustion of any unburned fuel before it reaches the catalytic converter, resulting in cleaner emissions. In order to...

Q: Check Engine code P0351

Hi there. This code is set when the PCM detects a fault in ignition coil #1. There are 6 coils in your vehicle. The problem may be the coil itself or it may be a wiring issue. Diagnostic information along...

Q: Check Engine Light keeps appearing, trouble code changed

Hi there, thanks for writing in. Having a professional mechanic complete a diagnostic inspection to determine why a mechanical part failure continues to happen is always the best course of action; especially if you're frequently replacing spark plugs on a...