Egr flow insufficient p0401 Dpfe sensor test

[I support common sense]

I’ve tested my egr valve and it seals fine, it also opens fine so the diaphragm works, the Dpfe sensor is next on my list. Anybody know how I can test it, and if I replace it should I go aftermarket or oem? I noticed the oem was plastic which cracks when hot over long periods of time.

 

[franklin2]

Make sure the EGR pipe is not clogged. Take it loose, it should leak exhaust profusely when the engine is started.

 

[I support common sense]

I can assure you it is not clogged, I’m %90 certain it is the Dpfe sensor, however the oem one is $80 new, so I don’t want to replace something that isn’t broken.

 

[stmitch]

1. Google "How to test DPFE sensor"
2. Watch videos
3. Test Sensor