[SOLVED] P3423 Code: Fix Low Exhaust Valve Control In Cylinder 3

The P3423 fault code in automobiles indicates a problem with the Cylinder Deactivation Solenoid. The symptom is the Engine Light ON or Service Engine Soon Warning Light.

The cause could be low oil pressure, restricted oil passage, engine mechanical condition, faulty Cylinder Deactivation Solenoid, Cylinder Deactivation Solenoid harness is open or shorted, or Cylinder Deactivation Solenoid circuit poor electrical connection.

The repair importance is high as it affects the engine’s performance. The repair difficulty is moderate, and the fix involves visually inspecting the related 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 1.0 hour.

It is essential to interpret the fault code to identify the problem accurately and fix it promptly.

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 a sign of p3423 fault code.

Here are the symptoms to look out for:

  • The P3423 fault code in an automobile can cause several symptoms, including the engine light turning on or the service engine soon warning light appearing.
  • Other symptoms may include a decrease in engine power, rough idling, engine misfires, and poor acceleration.
  • Additionally, the vehicle may experience stalling or hesitation during acceleration, and there may be a noticeable decrease in fuel efficiency.
  • It is important to address these symptoms promptly to prevent further damage to the vehicle and ensure safe driving conditions.

P3423 fault code can be caused by various factors such as low oil pressure, restricted oil passage, and faulty cylinder deactivation solenoid.

  • The automobile fault code P3423 can be caused by low oil pressure, restricted oil passage, engine mechanical condition, faulty Cylinder Deactivation Solenoid, Cylinder Deactivation Solenoid harness being open or shorted, and Cylinder Deactivation Solenoid circuit having poor electrical connection.

Below are the possible fixes for the automobile fault code p3423, including inspecting wiring harness and connectors for damage or corrosion.

  • To fix the automobile fault code p3423, you need to check the possible causes listed above.
  • Visually inspect the related wiring harness and connectors.
  • Look for damaged components and check for 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 P3423 has an estimated repair time of 1.0 hour. The cost of fixing this fault code is influenced by the repair time.

Most auto repair shops charge between $75 and $150 per hour for their services. Therefore, the fixing cost of P3423 will be between $75 and $150, depending on the repair time required.

The P3423 code indicates a problem with the cylinder deactivation system. Specifically, it relates to the exhaust valve control circuit for cylinder 3. This means that the ECM is not receiving the proper signal from the valve lifter for cylinder 3.

As a result, the cylinder may not be properly deactivated, leading to decreased fuel economy and potential engine damage.

It is important to have this issue diagnosed and repaired by a qualified mechanic as soon as possible.

What are the possible causes of the P3423 fault code?

If you see the P3423 fault code, it means that there is an issue with the Cylinder Deactivation Solenoid. The causes of this fault code can be low oil pressure, restricted oil passage, engine mechanical condition, faulty Cylinder Deactivation Solenoid, Cylinder Deactivation Solenoid harness is open or shorted, or Cylinder Deactivation Solenoid circuit poor electrical connection. To fix this issue, you need to check the possible causes listed above, visually inspect the related wiring harness and connectors, and look for damaged components and broken, bent, pushed out, or corroded connector’s pins.

How can I visually inspect the related wiring harness and connectors to fix the P3423 fault code?

If you’re experiencing the P3423 fault code, start by checking the possible causes listed above. To visually inspect the related wiring harness and connectors, look for damaged components and check for broken, bent, pushed out, or corroded connector’s pins. This will help you identify any issues with the Cylinder Deactivation Solenoid harness, which could be open or shorted, or have a poor electrical connection.

What are the consequences of ignoring the P3423 fault code?

Ignoring the P3423 fault code, which indicates a problem with the Cylinder Deactivation Solenoid, can lead to serious consequences. The engine light will remain on, indicating a problem with the engine. The cause of the problem could be low oil pressure, restricted oil passage, engine mechanical condition, or a faulty Cylinder Deactivation Solenoid. To fix the issue, it is important to visually inspect the related wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connector’s pins.

p3423 error fault code explained

If you see the Engine Light ON or Service Engine Soon Warning Light, it could be due to low oil pressure, restricted oil passage, or a faulty Cylinder Deactivation Solenoid. Check the possible causes listed above, visually inspect the wiring harness and connectors, and look for damaged components or corroded pins.

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