Possible causes
– Clogged hose to Swirl control valve control vacuum check switch
– Swirl Control Valve Control Solenoid Valve harness is open or shorted
– Swirl Control Valve Control Solenoid Valve circuit poor electrical connection
– Faulty Swirl Control Valve Control Solenoid Valve
– Faulty Swirl control valve control vacuum check switch
– Swirl Control Valve Control Solenoid Valve harness is open or shorted
– Swirl Control Valve Control Solenoid Valve circuit poor electrical connection
– Faulty Swirl Control Valve Control Solenoid Valve
– Faulty Swirl control valve control vacuum check switch
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1165 INFINITI Description
The swirl control valve control vacuum check switch detects vacuum signal to the swirl control valve, and sends “ON” or “OFF” signal to the ECM.
When vacuum is supplied to the valve, the swirl control valve control vacuum check switch sends “OFF” signal to the ECM. The swirl control valve control vacuum check switch is not used to control the engine system, it is used for on board diagnosis.
When vacuum is supplied to the valve, the swirl control valve control vacuum check switch sends “OFF” signal to the ECM. The swirl control valve control vacuum check switch is not used to control the engine system, it is used for on board diagnosis.