DTC P0456 Or DTC P1456: Notes

WARNING: This page is about a different car, the 2002 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

Code Definition

DTC P0456: EVAP Control System (Very Small Leak - Negative Pressure)
DTC P1456: EVAP Control System (Small Leak - Positive Pressure)

NOTE: If DTC P0456/P1456 is present with P0442, perform diagnosis for DTC P0456/1456 first.

NOTE: Before performing diagnostic procedure, follow testing procedure. See TESTING PROCEDURE under SELF-DIAGNOSTIC SYSTEM.