Dpfe High Idle

[BOOYAHGRANDMA]

Would a bad DPFE cause the enigne to idle high? I keep getting the p1506 code and have used the help of the fourm to make sure everything is in good order but the code keeps coming up. Now i am getting code p1401 which is a DPFE code and the p1506 high idle code , do these two codes run hand in hand? Has any one ran into this before? Also when i kick the heater or ac on the idle drops bad , i have replaced the IAC and check the wires and they are all in good working order , checked to make sure everything was tight and there are no vaccum leaks , checked the MAF and its working , but still get code p1506 and now p1401. Any help at all or something to point me in the right direction would help alot.

 

[BOOYAHGRANDMA]

Thanks for all the help everyone...

 

[97ranger xlt]

check TPS + PCV

 

[BOOYAHGRANDMA]

bad DPFE. When the DPFE starts to go it will make your idle go nuts cause its not reading right , so you could get a false p1506 code and have it be a bad DPFE