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PO401
Posted: Tue Aug 08, 2017 10:02 am
by kennyz
My 2000 SSEi keeps throwing this code (insufficient EGR flow). Sometimes it will stay off for days or even weeks. Other times it will come on after a few miles. I`ve cleaned the EGR valve and the pipe passages and was wondering what I should do next.
Re: PO401
Posted: Tue Aug 08, 2017 10:43 am
by 96 SSEi
HI, IS YOUR CAR RUNNING HOTTER THAN NORMAL?you sure you cleaned the passages really good?
Re: PO401
Posted: Wed Aug 09, 2017 10:04 am
by kennyz
No, operating temperature is normal and yes, I cleaned the passages thoroughly and checked the pipe for cracks.
Re: PO401
Posted: Wed Aug 09, 2017 11:04 am
by 96 SSEi
you can check the 'causes' section here.........
https://www.obd-codes.com/p0401