[SOLVED] P3451 Code: Fix Low Voltage In Cylinder 7 Solenoid Valve

The P3451 fault code in automobiles indicates a problem with the Valve Lifter Oil Manifold Assembly.

The most common symptom is the Engine Light turning on. The cause of this issue could be low oil pressure, restricted oil passage, faulty valve lifter oil manifold assembly, or a poor electrical connection. It is important to address this issue promptly as it can lead to engine damage.

The repair difficulty is moderate, and the fix involves visually inspecting the wiring harness and connectors, checking for damaged components, and looking for broken, bent, pushed out, or corroded connector’s pins. The repair time is estimated to be around 1.0 hour. It is crucial to interpret the fault code correctly to ensure the proper repair is performed.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

If you notice the Engine Light ON (or Service Engine Soon Warning Light), it could be due to the p3451 fault code.

Here are the symptoms to look out for:

  • The P3451 fault code in an automobile can cause the following symptoms: Engine Light ON, Service Engine Soon Warning Light, rough engine idle, engine misfire, decreased fuel efficiency, and reduced engine power.
  • It can also cause the engine to stall or fail to start.
  • These symptoms can be caused by a malfunctioning camshaft position sensor, faulty wiring, or a damaged engine control module.
  • It is important to address these symptoms promptly to prevent further damage to the vehicle.

The P3451 automobile fault code can be caused by various factors, including low oil pressure and faulty valve lifter oil manifold assembly.

  • The automobile fault code P3451 can be caused by low oil pressure.
  • It can also be caused by a restricted oil passage.
  • Another cause of this fault code is a faulty Valve Lifter Oil Manifold Assembly.
  • An open or shorted Valve Lifter Oil Manifold Assembly harness can also trigger this code.
  • A poor electrical connection in the Valve Lifter Oil Manifold Assembly circuit can also be a cause.
  • Lastly, a faulty Engine Control Module (ECM) can also be a reason for the P3451 fault code.

To fix the p3451 automobile fault code, check the possible causes and inspect related wiring harness and connectors for damage.

  • To fix the automobile fault code p3451, you need to check the possible causes listed above.
  • Visually inspect the related wiring harness and connectors.
  • Look for damaged components and broken, bent, pushed out, or corroded connector’s pins.
  • This fix will take an estimated repair time of 1.0 hour.

The automobile fault code P3451 can be diagnosed and fixed within an estimated repair time of 1.0 hour. The cost of repair is influenced by the hourly rate charged by the auto repair shop, which typically ranges between $75 and $150 per hour. Therefore, the total cost of diagnosing and fixing the P3451 fault code will depend on the hourly rate charged by the auto repair shop and the estimated repair time required to fix the issue.

The P3451 code refers to the cylinder deactivation system in the engine. The Engine Control Module (ECM) commands the cylinder deactivation system ON to deactivate engine cylinders 1, 7, 6, and 4, switching to a V4 mode. Cylinder deactivation is accomplished by not allowing the intake and exhaust valves to open on the selected cylinders by using special valve lifters.

The deactivation lifters contain spring-loaded locking pins that connect the internal pin housing of the lifter to the outer housing. Switching between V8 and V4 modes is accomplished in less than 250 milliseconds, making the transitions seamless and transparent to the vehicle operator.

What are the possible causes of the P3451 automobile fault code?

If you’re experiencing the P3451 fault code, your engine light may be on. This could be due to low oil pressure, a restricted oil passage, a faulty valve lifter oil manifold assembly, or a poor electrical connection in the valve lifter oil manifold assembly circuit. To fix the issue, check the possible causes listed above and visually inspect the related wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector’s pins.

How can I fix the P3451 automobile fault code?

If you’re experiencing the P3451 fault code, which is indicated by the engine light or service engine soon warning light turning on, there are a few possible causes to consider. These include low oil pressure, a restricted oil passage, a faulty valve lifter oil manifold assembly, an open or shorted valve lifter oil manifold assembly harness, a poor electrical connection in the valve lifter oil manifold assembly circuit, or a faulty engine control module (ECM). To fix the issue, start by checking the possible causes listed above and visually inspecting the related wiring harness and connectors for any damage or corrosion.

What should I visually inspect to diagnose the P3451 automobile fault code?

If you’re experiencing the P3451 automobile fault code, you may notice that your engine light is on. This could be caused by low oil pressure, a restricted oil passage, a faulty valve lifter oil manifold assembly, an open or shorted valve lifter oil manifold assembly harness, a poor electrical connection in the valve lifter oil manifold assembly circuit, or a faulty engine control module (ECM). To diagnose the issue, visually inspect the related wiring harness and connectors, checking for damaged components and broken, bent, pushed out, or corroded connector pins.

p3451 error fault code explained

If you see the Engine Light ON or Service Engine Soon Warning Light with the P3451 code, check for low oil pressure, restricted oil passage, faulty Valve Lifter Oil Manifold Assembly, or a faulty Engine Control Module.

Visually inspect the wiring harness and connectors for damage or corrosion.

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