Subaru 98 egr valve - 1998 Subaru Impreza

Yes they do.

https://www.google.com/search?q=2006+Subaru+Impreza+EGR+valve+solenoid

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Hi. You will find the EGR valve behind the alternator. You will need to disconnect the battery and remove the alternator to access the EGR valve. The PCV valve is buried too. Passenger side, remove the air box and look down below the coil pack, near the TAC (Throttle Actuating Controller).

codes p 0404 refers to exhaust gas recirculation (EGR) system---range /performance====causes hose leaking/blockage---wiring---EGR valve /solenoid
code p 0405 refers to EGR valve position sensor A---low input===causes ---wiring short to ground --EGR valve position sensor ---ECM
replace the egr system is a good option

EGR Valve has to be replaced ,no fixing

find the EGR valve, then follow the vacuum hose to the solenoid.

Code p0405 is for faulty EGR vave or some of the pipe/lines going in or out of EGR valve/system hase broke, leaks or fall of. Or egr valve is dirty and stuck. Check EGR valvle!

1. Detach the vacuum hose from the EGR valve.
   
2. Remove the two nuts which secure the EGR valve to the intake manifold assembly.
   
3. Remove the valve and gasket from the manifold.
   
4. Clean all gasket material from both mating surfaces.
   
5. Check the vacuum hose for deterioration and replace as necessary.
   

To install:

1. Inspect the exhaust gas passages in the intake manifold and clean as necessary. Clean the EGR valve assembly as necessary.
   
2. Using a new gasket, install the EGR valve.
   
3. Tighten the EGR valve securing nuts to 17-19 ft. lbs. (22-25 Nm).
   
4. Install the hose on the EGR valve.

Hello, If you know what an EGR valve is and where it is on your car you will need to try this. The EGR valve is on the back of the intake manifold on the drivers side as long as it's left hand drive. It looks like a side ways flying saucer with a small black rubber vacuum line going to it. Pull that little line off and put a small bolt or golf "T" in it to keep from having a vacuum leak. Then give the bottom the the valve (not the saucer part) a couple of hard taps with a hammer and then go drive it to see if it drives normal now. If it does you will need an EGR vacuum control solenoid and replacing the EGR valve itself is also recommended. I hope this info helps...(subyguru)...

There is a tube that connects to the EGR valve that gets blocked up-take it off and clean it out