PO401

[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.

[96 SSEi]

HI, IS YOUR CAR RUNNING HOTTER THAN NORMAL?you sure you cleaned the passages really good?

[kennyz]

No, operating temperature is normal and yes, I cleaned the passages thoroughly and checked the pipe for cracks.

[96 SSEi]

you can check the 'causes' section here.........https://www.obd-codes.com/p0401