Posts Tagged: P0404
P0404 code for EGR — What it means and how to fix it
Learn what a P0404 code for EGR means and how to fix the problem A P0404 code is defined as Exhaust Gas Recirculation Circuit Range/Performance; meaning that the EGR valve is performing outside your vehicle’s parameters. More specifically, the P0404 code can mean the valve is closed when it should be open or vice-versa or that the EGR passage is restricted. It’s a generic code that indicates that the engine control module (ECM) has detected that the exhaust gas recirculation isn’t what the ECM expected to see. The EGR system … Read More
P0401 EGR insufficient flow
Fix trouble code P0401 egr insufficient flow – Chrysler Minivan Late model Chrysler Minivans are known to post P0401 egr insufficient flow codes P0401-P0408. The egr valve is like an electronic solenoid that pulls the pintel off its seat. A position sensor at the top of the valve measures how far the pintel shaft has actually moved versus how much the computer commanded it to move. It’s the position sensor that goes bad (see plunger in photo). The problem may be in the sensor, but the fix is in replacing the … Read More