ok so my engine light come on the other day so i took it to this place were i live and the checked and cleared it for me, but they didnt know what the heck the codes was/meant, he phones my local ford service center and they didnt know. So i though to come on here and ask you guys, it came out as... P 1405 DPFE, we though it was a "upstream hose off" but he checked all the hose and they were all good

 

The closes code to that is P141 and thats Downstream heated O2 sensor heater circuit fault....if that helps at all....in the Hanyes book that code does not exist at all...[&:][&:][&:][&:]

 

DPFE..... thats a sensor under your hood. I got a code a few months ago.... im almost positive that was the same on... and i had to replace the DPFE sensor. got it for like 40 bucks on ebay. Its a small silver box that attatches to the left side of your upper intake manifold

 

PFE/DPFE Sensor


This component is only found on 3.8L and 4.6L engines, and is also referred to as the backpressure transducer.

Disconnect the negative battery cable.


Detach and label the wiring harness connector from the PFE/DPFE sensor.

Disconnect all of the hoses from the sensor.

Remove the mounting nuts, then separate the sensor from the mounting bracket.

On 4.6L DOHC engines, remove the EGR tube heat shield.

If necessary, remove the EVR solenoid (3.8L engines only) and the PFE/DPFE mounting bracket from the upper intake manifold.




To install:

If removed, install the EVR solenoid and mounting bracket onto the upper intake manifold.

If applicable, install the EGR tube heat shield.

Position the PFE/DPFE sensor on the mounting bracket, then install and tighten the mounting nuts until snug.

Attach all necessary hoses and wiring to the sensor.

Connect the negative battery cable.

 

is it going to cause any problems/affects if i dont replace this senson or what ever it is?

 

ummmmm... id say if u dont replace it for a WHILE then it may cause problems... i know mine started idleing REALLY bad because i didnt pay any atenttion to the check engine light. so yea it would be a good idea to replace it. has something to do with the EGR valve, which recirculates exhaust to help the car idle better

 

it doesnt seem that that my car is idleing rough and the light was on for almost 2 weeks before i got it checked, but i does seem that my car has a bit more get-up and go

 

hmm. is it idleing at high RPMs?

 

nah she runs at about 800 to 1500 rpm when i start it and let it sit