P3450 OBD Error Code: Problem & Solutions

<<See All OBD Codes

To fulfill the fuel and emission standards, the cylinder deactivation system is used by manufacturers. This helps to restrict the particular cylinders when extra power is not necessary from the engine like idle condition or during cruising on the highway. The P3450 error will be set when the intake valve for 7 cylinder does not turn off or on as needed.

Accommodating the cylinder deactivation feature is the main aim of cylinder 7 deactivation/ intake valve control circuit. This improvises fuel economy when the operation is light while driving on the highway. By engaging with the intake deactivating solenoids for 4 engine cylinders, the 4 or 8 cylinder modes of the engine are controlled by the ECM. This refers to the no.7 cylinder and other 3 cylinders are found by engine configuration and firing order of the cylinders. The #1cylinder deactivation solenoid is located on or near to the intake in the vicinity of that cylinder which depends on the specific vehicle as well as configuration.

What causes this problem with the Cylinder 7 Deactivation/Intake Valve Control Circuit Performance?

• Broken cylinder deactivation solenoid.
• The harness of the cylinder deactivation solenoid might be shorted or it might have an opening.
• The electrical connection of cylinder deactivation solenoid might be bad.
• Limited oil passages.
• Oil pressure might be little.

1. Engine Control Module - You can easily find out that the engine control module in your vehicle is damaged if your vehicle faces issues like stalling or misfiring. Additionally, the behavior of the engine can be erratic. In one such scenario, it is always best to replace the faulty engine control module.
2. Powertrain Control Module - The engine will fail to start or the fuel economy will be poor if the powertrain control module is faulty. Get them replaced as soon as possible so that you can get rid of the P3450 error code.
3. Intake Valve - A broken or faulty intake valve has to be replaced immediately to avoid the P3450 error code.
4. Exhaust Valve - A burnt exhaust valve can reduce the performance of the engine and causes further troubles. Get a new exhaust valve from PartsAvatar.
5. Oil Pressure Gauge - The P3450 error code can be avoided if the broken oil pressure gauge is changed with a new one from PartsAvatar.
6. Valve Timing Solenoid - A reduced fuel efficiency indicates a faulty valve timing solenoid. Alter it as instantly as possible

• Probable causes of a misfire.
• Fuel consumption might be high.
• You might notice the flashing of the engine light and the warning light of the service engine.
• Performance might be low by the engine

Well, if you are looking to know about the common symptoms related to this error code P3450, we have worked out a small list to help you discover this error code with your vehicle.

Fixing problems with your car is not as easy as it might seem. You need to be extremely careful and follow certain steps.

• Replacement of oil and filter.
• Correcting the faulty deactivation solenoid.
• Oil passage which has blocks must be cleaned.
• Dusting erosion from connectors.
• Repairing the wires.
• Replacement of PCM.

If you need parts to correct this problem, you can easily find them all with us at PartsAvatar. We have in stock like Engine control module, PCM, intake valve, engine misfire, exhaust valve, ECM, Oil pressure gauge high-end auto parts from top automotive brands. So, what are you waiting for? Grab best deals today with us.

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P3450 code to be stored:

Fluid & Wiring Inspections:

• As a primary step for any failure, you must check the TSB which is specific to your vehicle by year, model and power plant. This can help in saving a lot of timing by guiding you on the right path.
• Depending on your vehicle, the circuit may include several other components like the variable valve timing solenoid, switches, fault indicators, and the ECM.
• Carefully check the linked wires for any damages like scraping, rubbing, bare wires or burnt wires.
• Secondly, inspect the connectors as well as the connections for proper security, erosion and defective pins.
• This process must contain every wire and the components which also includes the ECM.
• You can always check the particular data of the vehicle to confirm the configuration of the cylinder 1 exhaust valve control circuit and make sure that every component is incorporated within the circuit which also has a fuse and fuse-able link in a few applications.

Advanced Steps:

• The advanced step for each vehicle varies and needs the proper tools to perform correctly.
• The process needs a digital multimeter and particular technical references for your vehicle.
• Before you proceed with the advanced steps, you must always gather the particular troubleshooting data for your vehicle.

Voltage Checks:

• The requirement of the reference voltage and acceptable ranges will vary depending on specific models of your vehicle as well as the configuration.
• The technical data which is specific contains the troubleshooting charts and the appropriate order in order to assist you with the right diagnosis.
• While inspecting, if you don’t find the power source or ground, you have to check the integrity of the wires, connectors, and other components by carrying out a continuity test.
• Remove the power from the circuit and carry out the continuity test and the correct reading for the wires and connections must be 0 ohms resistance.
• If you don’t find resistance or continuity, then the wires might be open, shorted or eroded which must be changed.

Common mistakes when diagnosing the P3450 code

• Malfunctioning of the PCM.
• Broken wires can cause some issue.
• The level of engine oil is reduced.
• Broken variable valve timing solenoid