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Home >> Infiniti >> 2017 >> QX30 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (3 Of 5) >> DTC/Circuit Diagnosis >> DTC P0451: Fuel Pressure Sensor >> DTC Description >> DTC Detection Logic

DTC Detection Logic

DTC No. CONSULT screen terms DTC detecting condition
(Trouble diagnosis content) Malfunction type
P0451 00 EVAP system pressure sensor/sw
(EVAP System Pressure Sensor/Switch Circuit Range/Performance)
NO SUBTYPE INFORMATION The pressure sensor/pressure switch of the evaporative emission control system has a malfunction.
09 COMPONENT MALFUNCTION The pressure sensor/pressure switch of the evaporative emission control system has a malfunction. There is a component malfunction.
16 CIRC VOLT BELOW THRESHOLD The pressure sensor/pressure switch of the evaporative emission control system has a malfunction. The limit value for electrical voltage has not been attained.
17 CIRC VOLT ABOVE THRESHOLD The pressure sensor/pressure switch of the evaporative emission control system has a malfunction. The limit value for electrical voltage has been exceeded.
24 SIGNAL STUCK HIGH The pressure sensor/pressure switch of the evaporative emission control system has a malfunction. No signal change: Voltage level is too high.
26 SIG RTE OF CHNG BLW THRESHLD The pressure sensor/pressure switch of the evaporative emission control system has a malfunction. The signal change rate is below the permissible limit value.
28 SG BS LVL O-OF RNG/ZR AJST ERR The pressure sensor/pressure switch of the evaporative emission control system has a malfunction. The signal offset is outside the permissible range.