P0404

2017-10-10

Description:

  • The fault code P0404 indicates that there is an issue with the Exhaust Gas Recirculation (EGR) control circuit. This may cause a number of issues such as reduced engine performance and increased emissions.

Possible Symptoms:

  • Illuminated check engine light

  • Reduced engine performance or acceleration

  • Rough idling or stalling

  • Increased emissions

Possible Causes:

  • Faulty EGR valve or sensor

  • Wiring or electrical connection issues in the EGR control circuit

  • Malfunctioning Engine Control Module (ECM)

  • Clogged or dirty EGR valve

Related Parts:

  • Exhaust Gas Recirculation (EGR) Sensor: Exhaust gas recirculation (EGR) is an emissions reduction technique used in petrol and diesel engines. Problems lead to harmful emissions out of limit

Possible Solutions:

  • Replace the EGR valve or sensor

  • Check and repair any damaged wiring or connections in the EGR control circuit

  • Clean or replace a clogged or dirty EGR valve

  • Replace the Engine Control Module (ECM) if necessary

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