Need help with P1400 code (2000 Explorer)
 

Hey, guys and girls! Let me start off by apologizing if this is in the wrong forum, I'm new here!

I have a 2000 Eddie Bauer Edition Ford Explorer (with the 5.0) and I've been having some trouble getting it to start. I mean it starts, but it takes it a couple minutes to get started.

We pulled a P1400 code off the truck and researched it. Everybody said it was probably the DPFE sensor so we took a couple hours to replace that (me and my dad- holy crap that thing was hard to get to). But the check engine light didn't go off and is still does the same thing. Help me? Thanks!

Are you sure you replaced the DPFE versus the EGR valve? The DPFE typically is not too hard to replace and entails one electrical connection and two vacuum hoses. I will caveat my comment that I have not specifically changed the DPFE on a 2000 Explorer V8, but on the others that I've looked at, the DPFE was not bad to get to.

-Rod

Yeah, it was the dpfe sensor. Two hoses and an electrical collection. It was just hard to get to because the dipstick for the transmission fluid was in the way and we couldn't get our wrench and socket down in there.

It might also be worth noting that I'm getting terrible gas mileage. About 9.6 mpg to be exact. Do you think it could be the egr valve? Thanks for the help, man!

From the factory service manual, here are the possible causes of this P1400 code for your 2000 Explorer:

• DPFEGR circuit short to GND
• Damaged DPF EGR sensor
• VREF short to GND
• Damaged PCM

The manual continues to provide this diagnostic help:
A DPF EGR PID reading less than 0.2 volt with the key ON and engine OFF or running, indicates a hard fault.



Do you have access to a scan tool that will allow you to monitor the DPFE value real time?


-Rod

Yes, I do. What do I scan? Just the DPFE Sensor?

You'll want to scan for something related to the EGR voltage. It's hard to say what the implementers of your scan tool decided to call it. It might be DPFE Voltage, it might be EGR Position, or it might be EGR Voltage, etc.

-Rod