Rick's Free Auto Repair Advice

Posts Tagged: Circuit Range Performance


P0404 Exhaust Gas Recirculation (EGR) Circuit Range Performance If you have a P0404 EExhaust Gas Recirculation (EGR) Circuit Range Performance trouble code, read this to understand what it means Engines recirculate a small amount of exhaust back into the intake manifold to reduce combustion temperatures and lower smog causing oxides of nitrogen emissions. The computer commands the EGR valve to open a certain amount and then checks to make sure it’s operating properly. One way to check is to mount a position sensor on the shaft of the EGR valve … Read More

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