Want this question answered?
Autozone, pep boys, car part(in philadelphia)
P1401 is DPFE sensor circuit high, check out this tutorial to replace the sensor on your Ford
P1405 Ford - DPFE Sensor Circuit Upstream HoseProbably caused by Faulty DPFE sensor (EGR pressure sensor), or a plugged EGR tube
Ford is the only American car company that uses a DPFE sensor. GM dpfe sensor are built into the EGR.
On the right rear of the engine by the throttle body.
I dont believe the Impala 2003 uses a DPFE sensor as part of there Emissions system.
YES - www.motorcraft.com lists a DPFE sensor for all available engines on a 1996 Ford Ranger
Where is the DPFE sensor located in a 1999 Ford Exployer? I had my oil changed yesterday and was told that the hose connected to this sensor is off.
yes
The DPFE sensor is a totally separate sensor. Look for the feed pipe to the EGR valve and follow it towards the exhaust. Somewhere along that line you will see two small pipes leading to hoses, that lead to the sensor.
A P0402 indicates that the PCM is seeing voltages higher than expected from the DPFE(Delta Pressure Feedback Exaust) sensor. The DPFE is the EGR position sensor. The high than expected reading could be caused by an EGR valve that is either sticking open, EGR valve that is being held open by the EGR vacuum regulator, or it could be a faulty DPFE sensor.
P1401 is DPFE Sensor Circuit High Faulty Differential Pressure Feedback Electronic (DPFE) sensor. Loose of disconnected wiring to the sensor