Diagnosis Conditions

Fig 1: DTC P0455 Diagnosis Conditions

Courtesy of PORSCHE OF NORTH AMERICA, INC.

NOTE: Fuel tank ventilation diagnosis is initiated with the Porsche System Tester 2 in the "Short Test" menu. This reduces the time elapsed after engine start-up to 30 seconds.

Fig 2: DTC P0455 Fault Conditions

Courtesy of PORSCHE OF NORTH AMERICA, INC.

NOTE: A frozen EVAP canister shutoff valve can lead to this fault.