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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 621 (Engine Control System (DTC/Circuit Diagnosis) (7 Of 17)) >> DTC/Circuit Diagnosis >> DTC P0191: FRP Sensor >> DTC Description >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P0191

FRP SENSOR A

(Fuel rail pressure sensor "A" circuit range/performance)

Diagnosis condition

Ignition switch ON

Signal (terminal)

Fuel rail pressure sensor signal

Threshold

Fuel rail pressure remains at more than 14.5 MPa (147.9 kg/cm 2 , 21025 psi)

Diagnosis delay time

0.2 seconds or more