Código de avería P0177 – This is a generic powertrain diagnostic trouble code (DTC) applicable to all OBD-II compatible vehicles. Specific repair steps can vary from make/model. This trouble code that is specific to flex fuel vehicles. The fuel composition sensor is also known as a flex fuel sensor (FFS) and measures the percentage of ethanol present in the fuel being supplied to the engine. The powertrain control module (PCM) uses FFS information to calculate the correct air/fuel mixture and ignition timing for the best possible performance and fuel economy under all operating conditions. The FFS produces a frequency (hz) signal that is a direct reflection of the percentage of methanol in the fuel. The higher the percentage of methanol, the higher the frequency. If the PCM receives signals from the FFS that are not within a specific range it will illuminate the check engine light and set DTC P0177. Related fuel composition sensor circuit trouble codes include: P0176 Fuel Composition Sensor Circuit Malfunction P0178 Fuel Composition Sensor Circuit Low Input P0179 Fuel Composition Sensor Circuit High Input
El código de avería P0177 indica: This is a generic powertrain diagnostic trouble code (DTC) applicable to all OBD-II compatible vehicles. Specific repair steps can vary from make/model. This trouble code that is specific to flex fuel vehicles. The fuel composition sensor is also known as a flex fuel sensor (FFS) and measures the percentage of ethanol present in the fuel being supplied to the engine. The powertrain control module (PCM) uses FFS information to calculate the correct air/fuel mixture and ignition timing for the best possible performance and fuel economy under all operating conditions. The FFS produces a frequency (hz) signal that is a direct reflection of the percentage of methanol in the fuel. The higher the percentage of methanol, the higher the frequency. If the PCM receives signals from the FFS that are not within a specific range it will illuminate the check engine light and set DTC P0177. Related fuel composition sensor circuit trouble codes include: P0176 Fuel Composition Sensor Circuit Malfunction P0178 Fuel Composition Sensor Circuit Low Input P0179 Fuel Composition Sensor Circuit High Input
¿Qué significa el código P0177?
This is a generic powertrain diagnostic trouble code (DTC) applicable to all OBD-II compatible vehicles. Specific repair steps can vary from make/model. This trouble code that is specific to flex fuel vehicles. The fuel composition sensor is also known as a flex fuel sensor (FFS) and measures the percentage of ethanol present in the fuel being supplied to the engine. The powertrain control module (PCM) uses FFS information to calculate the correct air/fuel mixture and ignition timing for the best possible performance and fuel economy under all operating conditions. The FFS produces a frequency (hz) signal that is a direct reflection of the percentage of methanol in the fuel. The higher the percentage of methanol, the higher the frequency. If the PCM receives signals from the FFS that are not within a specific range it will illuminate the check engine light and set DTC P0177. Related fuel composition sensor circuit trouble codes include: P0176 Fuel Composition Sensor Circuit Malfunction P0178 Fuel Composition Sensor Circuit Low Input P0179 Fuel Composition Sensor Circuit High Input
Síntomas del código P0177
- Fallo motor
- Pérdida de potencia
- Testigo encendido
Causas del código P0177
Este código puede estar relacionado con diferentes fallos en el sistema.
Solución del código P0177
I have only encountered this code one time in the field and it turned out to be a man-made problem. The customer had installed a 0 gauge audio amp power wire running directly in over the harness containing the FFS circuit. The magnetic field created by the amperage running through the power wire interfered with the frequency output of the FFS to the point that it sent a false signal of 145hz to the PCM. Although I have never encountered a faulty FFS it is a definite possible cause for this code but not as probable as electrical interference caused by aftermarket add ons or faulty ignition components. A PCM failure in the FFS circuit would be very rare.
Preguntas frecuentes
¿Es grave el código P0177?
Depende del vehículo, pero se recomienda revisarlo cuanto antes.
¿Se puede conducir con el código P0177?
No es recomendable durante largos periodos.