P1801 INFINITI, NISSAN: VARIABLE INTAKE AIR SYSTEM CONTROL SOLENOID VALVE 2
POST UPDATED IN May, 2023
P1801 INFINITI, NISSAN: VARIABLE INTAKE AIR SYSTEM CONTROL SOLENOID VALVE 2
The variable intake air system has a solenoid that is responsible for creating interruptions in the multiple vacuum signal voltage, thereby regulating valve operation. The solenoid is activated or deactivated as needed by the Engine Control Module (ECM).
While the variable intake air system solenoid is not operating, the vacuum signal to the intake manifold is interrupted. By the time the ECM determines that the solenoid should operate, a coil energizes the plunger, thus producing a vacuum feed signal to the valve actuator.
The P1801 OBDII fault code setting on Infiniti and Nissan vehicles is due to the fact that the signal received by the ECM from the variable intake air system solenoid 2 does not match the parameters set for proper operation.
The DTC P1801 OBD2 is stored by one of the following factors:
To troubleshoot the P1801 OBDII diagnostic code consider the following