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Home >> Infiniti >> 2017 >> QX30 Luxury, FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (2 Of 5) >> DTC/Circuit Diagnosis >> DTC P0191: Fuel Rail 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
P0191 16 FUEL RAIL PRESSURE SENSOR A
(Fuel Rail Pressure Sensor Circuit Range/Performance Bank 1)
CIRC VOLT BELOW THRESHOLD The fuel pressure and temperature sensor has a malfunction. The limit value for electrical voltage has not been attained.
17 CIRC VOLT ABOVE THRESHOLD The fuel pressure and temperature sensor has a malfunction. The limit value for electrical voltage has been exceeded.