Possible Causes

Malfunction is detected when a low voltage signal is sent to ECM from EVAP-CSPS. See Fig 1. Possible causes are:

• EVAP-CSPS circuit open or shorted.
• EVAP control system pressure sensor.
• EVAP canister vent control valve.
• EVAP canister.

Fig 1: DTC P0452 On-Board Diagnosis Logic

Courtesy of NISSAN MOTOR CO., U.S.A.