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Home >> Infiniti >> 2018 >> QX30 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (2 Of 4) >> DTC/Circuit Diagnosis >> DTC P0451: Fuel Pressure Sensor >> DTC Description >> DTC Detection Logic
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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.