DTC DETECTION 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.

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DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0455
EVAP control system gross leak detected
EVAP control system has a very large leak such as fuel filler cap fell off, EVAP control system does not operate properly.
  • Fuel filler cap remains open or fails to close.
  • Incorrect fuel tank vacuum relief valve
  • Incorrect fuel filler cap used
  • Foreign matter caught in fuel filler cap.
  • Leak is in line between intake manifold and EVAP canister purge volume control solenoid valve.
  • Foreign matter caught in EVAP canister vent control valve.
  • EVAP canister or fuel tank leaks
  • EVAP purge line (pipe and rubber tube) leaks
  • EVAP purge line rubber tube bent.
  • Loose or disconnected rubber tube
  • EVAP canister vent control valve and the circuit
  • EVAP canister purge volume control solenoid valve and the circuit
  • Fuel tank temperature sensor
  • O-ring of EVAP canister vent control valve is missing or damaged.
  • EVAP control system pressure sensor
  • Refueling EVAP vapor cut valve
  • ORVR system leaks

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

 
 DTC CONFIRMATION PROCEDURE

 
 1.PRECONDITIONING
 
 2.PERFORM DTC CONFIRMATION PROCEDURE
 
 3.CHECK DTC
 
 4.PERFORM DTC CONFIRMATION PROCEDURE