P3458 OBD Error Code: Problem & Solutions

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Is the oil pressure less? Does the engine light keep blinking? Then the P3458 error might be stored. Most manufacturers have started using cylinder deactivation system to reach the fuel and emission standards. This will enable the PCM to delimit selected cylinders when more power is not required from the engine during situations like idle or cruising. The P3458 error will be set, if the PCM finds that the intake valve for #8 cylinder does not go off or on as needed.

Allowing the cylinder deactivation feature is the main aim of cylinder 8 deactivation/intake valve control circuit as it helps to improve fuel economy when the load operation seems to be light during highway driving. The ECM will take care of the 4 or 8 cylinder modes of the engine as it includes intake deactivating solenoids for four of the engine cylinders. The code refers to #8 cylinder and the other 3 cylinders in this procedure is found out by engine order and firing configuration. Near the intake in the vicinity, the #1 cylinder deactivation solenoid is located, based on the configuration of the specific vehicle.

What causes this problem with the Cylinder 8 Deactivation/Intake Valve Control Circuit Performance?

• The improper functioning of the cylinder deactivation solenoid.
• You might find the harness of the cylinder deactivation solenoid to be opened or the circuit might be shorted.
• The electrical connection might be bad in the cylinder deactivation solenoid.
• The hydraulic passage is blocked.
• Less oil pressure.

1. Engine Control Module - Erratic engine behavior shows that the ECM is damaged or defective. Fix it as soon as possible or replace it with a new ECM.
2. Powertrain Control Module - You can find the powertrain control module to be damaged if the engine light keeps flashing and if the car fails to start immediately. The right replacement for your damaged powertrain control module can be found at Parts Avatar.
3. Intake Valve - Visually inspect the intake valve if it is broken or damaged. If so, replace them with the right part from PartsAvatar at an affordable cost.
4. Exhaust Valve - Does the engine consume more oil? Is the performance of your vehicle very poor? Then the exhaust valve can be damaged which has to be replaced quickly.
5. Oil Pressure Gauge - A broken, faulty or damaged oil pressure gauge has to be replaced immediately so that this error code can be avoided from getting stored in your vehicle.
6. Valve Timing Solenoid - If the check engine light keeps blinking often, then it is a sign of broken valve timing solenoid. Change it to avoid further troubles.

Willing to know some common symptoms of OBD Code P3458? Your wish is our demand. Have a look at them below:

Common Symptoms

• Lack of engine performance.
• Fuel consumption is more
• Symptoms of misfire in the vehicle.
• Either the warning light of the service engine or the engine light will remain on.

Have a look at some ways with which you can correct the P3458 code:

• You have to replace the oil and filter.
• The defective variable valve timing solenoid has to be replaced.
• Wiping the rusted connectors.
• Replacing the wires.
• Replacing the PCM.
• Blocked oil passage must be cleared.

There is no need to get strained if your OBD Code is still flashing up as we are here at your service. Have a look at our superior variety of ECM, PCM, intake valve, exhaust valve, oil pressure gauge, valve timing solenoid and many more. Now all your problems would vanish within no time.

If you want to easily diagnose this fault code, then all you have to do is to follow the steps which are mentioned below:

Fluid & Wiring Inspections

• You can initially begin with a troubleshoot method and examine for the correct Technical Service Bulletins that is precisely designed for your vehicle by year, model and transmission.
• This can help you in the long run by saving time as it guides you down the right path.
• Firstly ensure that the engine oil is not contaminated and is available at the right level. If you clearly don’t remember to check the records as to when you last changed the filter and fluids.
• Depending on your vehicle, the circuit may include several other components like deactivation solenoid, switches, fault indicators, and the ECM.
• Check for injuries like scraping, rubbing, or burn spots by visually inspecting these elements as well as the connectors and its connections to ensure safety.
• Connectors, as well as its connections, must be checked for erosion, defective pins, and security.
• The ECM must be inspected along with the wiring connections and the components.
• Look at the specific tech data of the vehicle and see for the configuration of the cylinder 8 deactivation/intake valve control circuit and approve that every part is included in the circuit which may contain the fuse or a fuse-able link in some applications.

Advanced Steps

• Each and every vehicle have their own procedure as they are specific and you have to use proper diagnostic tools for the process.
• In order to start the process, you have to use a digital multimeter and appropriate technical references.
• It is always best to use your vehicle specific troubleshooting chart before you proceed with the advanced steps.
• The need for voltage will change depending on the design or the configuration

Voltage Checks

• The permitted range and reference voltage might vary based on the specific vehicle and configuration of the circuit.
• The troubleshooting charts and the suitable sequence which is included in the specific technical data can help in the correct diagnostic process.
• In this procedure, if there is no power source or ground, then the integrity of the wires, connectors, and other components have to be performed by carrying out a continuity test.
• While doing the continuity test, make sure to remove the power from the circuit and 0 ohms resistance must be set as normal readings for wires and connections.
• No continuity or resistance is a sign of damaged wires that might be open, eroded or shorted and needs a quick replacement.

Common mistakes when diagnosing the P3458 code

• Broken PCM.
• The electrical wire causes some problem.
• Engine oil level is minimum.
• Failure of the variable valve timing solenoid.