Engine-Codes - Nissan - P1800 2005 Nissan Maxima

P1800 2005 Nissan Maxima Code - Variable Intake Air System Control Solenoid Valve Circuit

- Code Popularity: 13,478 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
Table of contents

|What are the Possible Causes of the Code P1800 2005 Nissan Maxima?

  • Faulty Variable Intake Air System (VIAS) Control Solenoid Valve
  • VIAS Control Solenoid Valve circuit harness is open or shorted
  • VIAS Control Solenoid Valve circuit poor electrical connection

|How to Fix the P1800 2005 Nissan Maxima Code?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|Code P1800 2005 Nissan Maxima Tech Notes





User Submitted Video

|What is the Cost to Diagnose the Code P1800 2005 Nissan Maxima?

Labor: 1.0

The cost to diagnose the P1800 2005 Nissan Maxima code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

Does your car have Safety Recalls? → Check here

|What are Code P1800 2005 Nissan Maxima Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What Does the P1800 2005 Nissan Maxima Code Mean?

When the engine is running at low or medium speed, the power valve is fully closed. Under this condition, the effective suction port length is equivalent to the total length of the intake manifold collector's suction port including the intake valve. This long suction port provides increased air intake which results in improved suction efficiency and higher torque generation.
The surge tank and one-way valve are provided. When the engine is running at high speed, the Engine Control Module (ECM) sends the signal to the Variable Intake Air System (VIAS) control solenoid valve. This signal introduces the intake manifold vacuum into the power valve actuator and therefore opens the power valve to two suction passages together in the collector.
Under this condition, the effective port length is equivalent to the length of the suction port provided independently for each cylinder. This shortened port length results in enhanced engine output with reduced suction resistance under high speeds.
The VIAS control solenoid valve cuts the intake manifold vacuum signal for power valve control. It responds to ON/OFF signals from the ECM. When the solenoid is off, the vacuum signal from the intake manifold is cut. When the ECM sends an ON signal the coil pulls the plunger downward and feeds the vacuum signal to the power valve actuator. The Diagnostic Trouble Code (DTC) will be set when an excessively low or high voltage signal is sent to ECM through the valve

Variable Intake Air System Control Solenoid Valve Circuit

|Need more Information on the P1800 2005 Nissan Maxima Code?

Need more information on how to fix the P1800 2005 Nissan Maxima code? Get Access to Factory Service Manuals

|Need Help with the P1800 2005 Nissan Maxima Code?

Get the P1800 2005 Nissan Maxima code diagnosed by a professional: Find a repair shop in your area