P0474

2017-10-10

Description:

  • The fault code P0474 indicates that the exhaust pressure sensor is not reading correctly. This fault may cause the engine to run poorly or not start at all.

Possible Symptoms:

  • Illuminated check engine light

  • Reduced engine power or acceleration

  • Decreased fuel efficiency

  • Increased exhaust emissions

Possible Causes:

  • Failed exhaust pressure sensor

  • Faulty wiring or connections in the circuit

  • Loose or corroded electrical connections

  • Failed engine control module (ECM)

Related Parts:

  • Exhaust Back Pressure Sensor: Exhaust Back Pressure sensor detects any kind of back pressure in the exhaust system. Back pressure is the pressure opposite to the exhaust flow resulting in a lower power output. This car's malfunctioning back pressure sensor may lead to higher emissions & lower performance

Possible Solutions:

  • Replace the exhaust pressure sensor

  • Check and repair any damaged wiring or connections

  • Tighten or clean any loose or corroded electrical connections

  • Replace the engine control module (ECM) if necessary

Search