DTC Detection Logic

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

DTC DETECTION CONDITION CHART

DTC No.	Trouble diagnosis name	DTC detecting condition	Possible cause
P0451	EVAP control system pressure sensor performance	ECM detects a sloshing signal from the EVAP control system pressure sensor	Harness or connectors (EVAP control system pressure sensor circuit is shorted.) [Crankshaft position (CKP) sensor (POS) circuit is shorted.] [Accelerator pedal position (APP) sensor 2 circuit is shorted.] (Refrigerant pressure sensor circuit is shorted.) EVAP control system pressure sensor CKP sensor (POS) APP sensor Refrigerant pressure sensor