Code # P1409 came up when we check on my 98 Ranger. I replaced the DPFE sensor (F77Z-9J460-AB) & control valve (F63Z-9J459-AA). The check engine light continues to come on after we erased it. Do you think it could possibly be the EGR valve?

I also have a problem with the interior light staying on all the time and the key chime (ding, ding, ding, etc.) sounding long after I have shut the door. Any ideas?

 

i dont knwo what would be wrong with it. maybe you have a short or something in the wiring..... or maybe your truck is possesed or someting ?

it might be the egr dont know though

 

they had it ding just to let you know the key is in the ignition even when the door is shut if it persists after the truck is running or if there is no key and it still dings sounds like a a shot sensor or crapped out realy have them both checked out

 

my best friend had an 95 ranger with similar problems (the shime) it came on and off at will, it was an electricalproblem not covered by the warranty and it cost almost $150 to get fixed money well worth it if asked me!