P0405

2017-10-10

Description:

  • The fault code P0405 signifies that there is an issue with the circuit A of the Exhaust Gas Recirculation (EGR) Sensor. This fault code may affect the vehicle's performance, and it may not meet the emission standards.

Possible Symptoms:

  • Check Engine Light is illuminated

  • Rough idle or stalling

  • Poor acceleration and engine performance

  • Failed emissions test

Possible Causes:

  • Wire of the circuit A of EGR sensor is broken or shorted to ground

  • Failed EGR sensor

  • Malfunctioning Engine Control Module (ECM)

  • Corroded or poor electrical connections in the circuit

  • Failed 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:

  • Inspect and replace the circuit A wire of the EGR sensor

  • Replace the EGR sensor

  • Repair or replace the Engine Control Module (ECM)

  • Check and clean electrical connections in the circuit

  • Replace the EGR valve if necessary

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