Another question about codes

[OneHotLX]

Ok, I read the codes on my 94 Bird. I got 4 codes(P1130,P1131,P1132,P1406). The first 4 were indicating that the O2's are bad which make sense because it'll blow black smoke and load up after cruising for a while and ping some under WOT. The fourth code is giving me trouble though. P1406 in the book is "Differential Pressure Feedback Sensor Downstream Hose Off or Plugged". What does this mean?:shrug: Why would the diff. have a sensor? It's an open diff with ABS. Can anyone help me?

TIA

 

[Ryan]

possibly EGR valve clogged?

 

[OneHotLX]

Hmm I'll have to look into that.

 

[Skidonenko]

DPFE is delta pressure feedback EGR, it tells the pcm if egr flow occours or not, they do fail often but could also be a cloged egr port

osh

 

[OneHotLX]

So the DPFE is a sensor on the EGR?

 

[Ryan]

On my car it was seperatae. a lil square box with two lil rubber hoses running from it. mounted to the intake