P0191

2017-10-10

Description:

  • The fault code P0191 indicates that there is a problem with the fuel rail pressure sensor circuit. This may cause the engine to operate improperly, and may also result in poor fuel economy.

Possible Symptoms:

  • Illuminated check engine light

  • Reduced engine power or acceleration

  • Engine stalls or hesitates during acceleration

  • Poor fuel economy

Possible Causes:

  • Damaged fuel rail pressure sensor

  • Faulty wiring or connections in the circuit

  • Failed engine control module (ECM)

Related Parts:

  • Fuel Rail Pressure Sensor: Fuel rail pressure sensor measures the fuel pressure in the fuel rail. This car has a problem in its fuel rail which may lead to poor fuel economy & poor acceleration

Possible Solutions:

  • Replace the fuel rail pressure sensor

  • Check and repair any damaged wiring or connections

  • Replace the engine control module (ECM) if necessary

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