Exhaust Gas Recirculation Sensor Circuit A Low

P0405 OBD-II Trouble Code:

This is the general code that explains the exhaust gas recirculation (EGR) with engine performance below the specified range detected by the Engine Control Module (ECM).

Possible Causes:

• Faulty EGR valve
• Poor wiring
• Weak connections
• EGR sensor shorted to ground

Possible Symptoms:

• Check engine light turns on
• Stalling of engine
• Knocking of engine
• Weak acceleration

Possible Solutions:

• Change the EGR sensor
• Change EGR valve
• Change the wiring
• Change the connections