P0401 Insufficient EGR Flow.
P0402 EGR Flow Excessive at Idle.
P1405 Differential Pressure Feedback Electronic Sensor circuit Upstream Hose.

First off, how can you have insufficent and excessive? kinda confused. Next, what the hell is 1405, and how do i fix that. I need to get this done asap as I need to get my car on the road again, due to my tabs being expired.


95 SES Sold 99 SE Sport Sold 99 SVT T-Red Tan Interior. K&N, Magnecors, 19' Theorys, And some audio stuff.