Valve gets stuck in the closed or open position due to a build-up of dirt, debris, or carbon
Clogged catalytic converter
Electrical issues with the valve control unit
Intake leaks
Incorrect vacuum hose connection
Damaged or missing EGR valve gasket
Issues with the vacuum control or switching valve
Defective EGR solenoid
Product Details
Nitrogen Oxide Sensor (1004-1025) by Walker Products®. Location: SCR Catalyst Outlet. The Exhaust Gas Recirculation Valve, also referred to as EGR, meters the exhaust gas that is being recirculated into the intake manifold. This exhaust gas recirculation process reduces combustion chamber temperatures, resulting in reduced NOx emissions.
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