would appreciate any help and inputs from previous owners with like problem..

thanks in advance...

po0325/knock sensor malfunction: Don't worry about it, very common nuisance code on these vans.
po0400/egr flow malfunction: 99% of the time it's a deteriorated 2" long rubber hose below the backpressure transducer valve.

po0325/knock sensor malfunction: Don't worry about it, very common nuisance code on these vans.
po0400/egr flow malfunction: 99% of the time it's a deteriorated 2" long rubber hose below the backpressure transducer valve.

thank u for yr response...I have changd the hose...( it is slightly shaped like a boomerang) ...the code reappeared. I have removed the aluminum tube and gave it a good cleaning inserting a strong steel wire and giving it a kind of bottle brush cleaning...quite a good amount of black carbon came out...put it back and 14 miles later the cel is on. I spoke with the the parts manager of the dealership and he advised that the bpt valve may be the culprit...it is costing 55 bucks and was told that they will not take it back once opened...not too sure whether that is the culprit...

how to ignore the knock sensor code? I have the state inspection coming up in 8 weeeks....

I will still keep experimenting and will post back if I ever crack the problem

thanks

Hi. I have the same problem now and have done a bit of research. I think the knock sensor problem may be caused by a weak EGR. I get a lot of knocking when starting to move so that suggests to me that the EGR is lagging in some way. So far the suggestions I've seen are : use better gas (>90 ouch at that price), blast out the throttle body with some cleaner, check the connection on the knock sensor & cable, under the lower rad front, change the gas cap, and change another control that I don't remember (have to search the threads for that one). I haven't tried any of these solutions yet so I don't know what may work. Good Luck.