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exhaust recirculation valve, helps with your emissions
Code 0404 is the exhaust gas recirculation circuit range performance problem. Code 0405 is the exhaust gas recirculation sensor A circuit low.
You have restriction in the exhaust somewhere and it's causing it to backflow.
This sensor varifies flow of the exhaust gases to the intake manifold. If flow is interupted the sensor will inform the onboard computer that the exhaust recirculation system has failed resulting in a check engine light to come on.
Yes, it does have EGR. The EGR Valve is located on the driver's side of the intake manifold. It also uses a DPFE sensor as well.
P0406 Exhaust Gas Recirculation Sensor A Circuit High
P0400 - Exhaust Gas Recirculation Flow Malfunction Possible causes - Exhaust Gas Recirculation (EGR) solenoid valve harness is open or shorted - Exhaust Gas Recirculation (EGR) solenoid valve circuit poor electrical connection - Exhaust Gas Recirculation (EGR) volume control valve stuck closed - Faulty Exhaust Gas Recirculation (EGR) volume control solenoid valve - Dead (Weak) battery - Faulty EGR temperature sensor and circuit - Faulty EGR Valve
exhaust gas recirculation sensorIt is a sensor that is mounted to the EGR valve. It moniters the position of the EGR valve and sends that info to the ECM.
P0405 Exhaust Gas Recirculation Sensor A Circuit Low
Dpfe sensor is the delta (differential) pressure feedback egr (exhaust gas recirculation) it monitors the pressure on the egr valve to make sure it is working.
Exhaust Gas Recirculation Sensor "A" Circuit High. Replace Sensor The sensor is part of the egr valve. Replace the valve.
The oxygen sensor is located on the exhaust manifold and is the only item on the exhaust with wires going to it.