On Board Diagnosis Logic

This diagnosis detects a very large leak (fuel filler cap fell off etc.) in EVAP system between the fuel tank and EVAP canister purge volume control solenoid valve.

For diagram of EVAP control system, see Figure .

Fig 1: Identifying DTC P0455 Conditions & Possible Causes

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

CAUTION:

Use only a genuine NISSAN fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the MIL may come on.
If the fuel filler cap is not tightened properly, the MIL may come on.
Use only a genuine NISSAN rubber tube as a replacement.