MasterTuning Fault code dictionary (DTC)

P0191 — Fuel Rail Pressure Sensor Circuit Range/Performance

Severity: Serious Can you drive? With caution: limp mode possible, have it checked soon Produttore: Tutti makes (OBD-II standard)
MeaningThe Motore computer has noticed that the signal coming Da the fuel rail pressure sensor does not match the expected Valore for the Corrente engine conditions. This means the sensor is either Lettura incorrectly, oppure the actual pressure in the fuel system is unstable.
FamilyPowertrain (P)

Typical symptoms

Motore is hard to start, especially when warm
Motore surges or lacks power during acceleration
Check Motore light is on

Common causes

Faulty fuel rail pressure sensor
Wiring oppure connector damage in the sensor circuit
Weak fuel pump oppure clogged fuel Filtra
Internal fuel pressure regulator failure

What a do

Have a technician check the physical fuel pressure with a mechanical gauge a see if the sensor is lying. It is best to Indirizzo this soon before it leaves you stranded with a No-start condition.

Domande Frequenti

What does code P0191 mean?

Fuel Rail Pressure Sensor Circuit Range/Performance. The Motore computer has noticed that the signal coming Da the fuel rail pressure sensor does not match the expected Valore for the Corrente engine conditions. This means the sensor is either Lettura incorrectly, oppure the actual pressure in the fuel system is unstable.

Can I keep driving with code P0191 Attivo?

With caution: limp mode possible, have it checked soon

Common causes — P0191

Faulty fuel rail pressure sensor Wiring oppure connector damage in the sensor circuit Weak fuel pump or clogged fuel Filtra Internal fuel pressure regulator failure

How do you fix code P0191?

Have a technician check the physical fuel pressure with a mechanical gauge a see if the sensor is lying. It is best to Indirizzo this soon before it leaves you stranded with a No-start condition.

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