[SOLVED] P1801 Code: Fix Variable Intake Air System Control Solenoid Valve 2

The automobile fault code P1801 indicates a problem with the VIAS control solenoid valve 2.

This can cause the engine light to turn on or the service engine soon warning light to illuminate.

To fix this issue, you should visually inspect the wiring harness and connectors for any damage. Look for broken, bent, pushed out, or corroded connector pins.

The repair time for this problem is estimated to be around 1.0 hour.

It is important to address this issue promptly to prevent further damage to the vehicle.

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

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When the engine light is on or the service engine soon warning light is illuminated, it could be a sign of the p1801 fault code.

  • The symptoms of the automobile fault code P1801 include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

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The automobile fault code P1801 can be caused by a faulty VIAS control solenoid valve 2, an open or shorted VIAS control solenoid valve circuit harness, or a poor electrical connection in the circuit.

  • The fault code P1801 can be caused by the following: a faulty VIAS control solenoid valve 2, an open or shorted circuit harness for the VIAS control solenoid valve, and poor electrical connection in the VIAS control solenoid valve circuit.

To fix the automobile fault code p1801, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code P1801, follow these steps: 1.
  • Check the possible causes mentioned above.
  • 2.
  • Visually inspect the wiring harness and connectors related to the fault code.
  • 3.
  • Look for any damaged components.
  • 4.
  • Check for broken, bent, pushed out, or corroded pins in the connectors.
  • The estimated repair time for this fix is 1.0 hour.

The factors influencing the cost of diagnosing and fixing the automobile fault code P1801 based on the estimated repair time of 1.0 hour include the hourly rate charged by auto repair shops, which typically ranges between $75 and $150.

The P1801 fault code refers to the Variable Intake Air System Control Solenoid Valve 2. This code is triggered when the Engine Control Module (ECM) sends a signal to the solenoid valve to control the intake manifold vacuum.

At low or medium engine speeds, the power valve is fully closed, resulting in a long suction port.

This allows for increased air intake, improving suction efficiency and generating higher torque. However, at high speeds, the ECM opens the power valve by introducing intake manifold vacuum to the solenoid valve. This shortens the port length, reducing suction resistance and enhancing engine output.

The P1801 fault code indicates a problem with the control solenoid valve, which may affect the variable intake air system’s operation.

It is important to address this issue promptly to ensure optimal engine performance.

What are the possible causes for the automobile fault code P1801?

If you see the engine light or service engine soon warning light on, it could be due to the fault code P1801. This code is often caused by a faulty VIAS control solenoid valve 2 or an open or shorted circuit harness for the solenoid valve. It can also be caused by poor electrical connections in the solenoid valve circuit. To fix this issue, you should visually inspect the wiring harness and connectors, checking for any damage or corrosion. Additionally, look out for broken, bent, pushed out, or corroded pins in the connectors.

How can I visually inspect the wiring harness and connectors to fix the P1801 fault code?

If you’re dealing with the P1801 fault code and notice that your engine light is on, it’s time to take action. The most common causes for this code are a faulty VIAS control solenoid valve 2, an open or shorted VIAS control solenoid valve circuit harness, or a poor electrical connection in the circuit. To fix the issue, start by visually inspecting the wiring harness and connectors. Look for any signs of damage, such as broken or bent pins, corrosion, or components that are out of place. This step is crucial in identifying and resolving the problem.

What should I look for when checking for damaged components and connector pins to resolve the P1801 fault code?

When resolving the P1801 fault code, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins. This can help identify any issues with the VIAS control solenoid valve circuit, which may be causing the engine light to turn on. By checking for these specific problems, you can effectively diagnose and fix the fault code.

p1801 error fault code explained

If you’re seeing the Engine Light ON or the Service Engine Soon Warning Light, it could be due to a faulty VIAS control solenoid valve 2 or issues with the circuit harness. To fix it, visually inspect the wiring harness and connectors for any damage, and check for broken or corroded pins.

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