Question about 1998 Ford Ranger SuperCab

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Location of the EGR valve/DPFE pressure sensor

I have a 1998 Ford Ranger truck will it cause any problem if not fixed soon?

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What engine? It won't cause any running problem but gas milage will be effected just because the light is on. Ford computers change parameters when the light is on and mileage will drop 1-2 miles per gallon.

Posted on Jun 21, 2009

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Fail smog and poss spark knock issues

Posted on Jun 21, 2009

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1 Answer

1401 egr code


P1401 FORD - DPFE Sensor Circuit High
Faulty Differential Pressure Feedback Electronic (DPFE) sensor
- Differential Pressure Feedback Electronic (DPFE) sensor harness is open or shorted
- Differential Pressure Feedback Electronic (DPFE) sensor circuit poor electrical connection. This is not likely the EGR but the EGR pressure sensing valve.

Oct 19, 2012 | Cars & Trucks

1 Answer

1405/405 error code for ford ranger 1996


P1405 is an EGR code this can be caused by a bad EGR valve and vaccum selonoid and or a bad DPFE sensor and blocked or melted hoses going to the DPFE.I usally remove the EGR Valve and using a hand held vaccum pump ck the Valve to see if it opens correctly if it is then ck the DPFE hoses if they are ok . Now if the EGR valve is bad You need to replace the DPFE and the Selonoid and the valve because the Valve not working burns them up internally. If the Valve is good first replace the selonoid ... its the cheapiest .... if that doesn't fix it replace the DPFE and the hoses going to it . If you know some one with a good Scan tool it may have a EGR self test prcedure built in like mine does and makes this easier but if not i have told you how with out a scanner

Aug 05, 2012 | Ford Cars & Trucks

1 Answer

I have a tropubleshooting code of P1405. On a ford Expedition 5.4l. Where do i fine the DPFE sensor (DPFE sensor upstream hose off or plugged.. aaECM detected EGR flow in a negative direction with aan


DPFE sensor failures are VERY COMMON on Ford vehicles. However, clogged EGR ports are also very common on 5.4L Ford engines. The DPFE sensor is located on the left side of the engine. It connects to two silicone rubber hoses that connect to the steel EGR tube coming from the back of the engine to the EGR valve. (See picture of the sensor below)

Another common failure is a DPFE sensor that has melted due to excessive exhaust back-pressure. If you find the DPFE sensor melted, suspect a restricted exhaust. (smashed tailpipe, clogged catalytic converter, etc..)


12_29_2011_3_03_10_am.jpg

Dec 29, 2011 | 2002 Ford Expedition

1 Answer

I have 1999 ford ranger 3.0 flex fuel. 109,000 miles. i get a code reading of p1400. is that a sensor problem or some kind of valve. and can you give a cost for repair estimate. thanks ...


The code P1400 reads "DPFE Sensor Voltage Low" (Ford, Mazda). Often it's caused by a bad DPFE sensor or clogged EGR passages. DPFE stands for (Differential Pressure Feedback EGRI) I would clean the EGR valve which cost nothing. If that does not cure the problem, you may need to replace the DPFE sensor, which does cost, and it may not fix the problem. If you want to be sure you replace the correct part, then visit your local Ford dealer.

Feb 14, 2011 | Ford Ranger Cars & Trucks

1 Answer

Either code 4000 or 1400 on 2002 ford ranger 4.0 ltr v6. the right code should equate to the egr valve. I have replaced the egr valve but check engine light comes on again after reset showing same code.


code p1400 is a DPF EGR sensor CIRCUIT LOW VOLTAGE detected. most likely is a problem with the wiring to the egr or dpfe sensor. the pinpoint tests for code p1400 instruct you to test all wiring before replaceing the egr or dpfe sensor

Jan 19, 2011 | 2002 Ford Ranger Regular Cab

1 Answer

1998 taurus 24v engine code p401-- what is most common fix?


DTC P0401 - Insufficient EGR Flow

EGR stands for Exhaust Gas Recirculation. It is part of the vehicle emmissions system, and is used to reduce combustion temperature and pressure to control Oxides of Nitrogen. There are generally three parts to the EGR system: the EGR valve, an actuator solenoid, and a differential pressure sensor EGR (DPFE). These things work together to deliver the correct amount of recirculation based on engine temperature, load, etc. The P0401 code means that OBD detected an insufficient amount of EGR.

Symptoms: You may notice drivability problems such as pinging (a.k.a. pre-ignition knock) when the engine is under load or the vehicle is at higher speeds. There may also be other symptoms.

Causes: A code P0401 most likely means one or more of the following has happened:
* The DPFE (differential pressure feedback EGR) sensor is faulty and needs to be replaced
* There is a blockage in the EGR (tube), most likely carbon buildup
* The EGR valve is faulty
* The EGR valve may not be opening due to a lack of vaccuum

Possible Solutions: In fixing this code, it is quite common for people to just replace the EGR valve only to have the OBD code return. The EGR valve is not always the culprit.
* Use a vacuum pump and pull the EGR valve open while monitoring engine RPM's & DPFE voltage. There should be a noticable difference in RPM's with the EGR open
* Clean out the EGR valve and/or tubing to remove deposits
* Check the voltage at the DPFE, compare to specified values (refer to a repair manual for your specific model)
* Replace the DPFE sensor (with a good quality / OEM one)
* Replace the EGR valve


hope this helps (remeber to rate this answer).

Jan 12, 2011 | Ford Taurus Cars & Trucks

1 Answer

2002 FORD RANGER 6CYL. 4.0L I GOT A P1400 TROUBLE


Exhaust gas recirculation flow insufficient detected.
Maybe you got a bad DPFE sensor, or the pintel inside the egr valve is not opening all the way causing the insufficient flow.

May 14, 2010 | 2002 Ford Ranger Regular Cab

2 Answers

Check engine light with code p1401


Recirculation (EGR) valve codes. The Differential Pressure Feedback EGR (DPFE) sensors on these vehicles have a high failure rate. Ford now uses a redesigned DPFE sensor. In effect, since the failure rate is so high, if you get this code, replace the sensor and retest. When the DPFE Sensor starts failing, it gives the PCM bad information. The DPFE Sensor is less sensitive, and the PCM thinks less recirculated gas is being burned than is actually so. Trying to compensate, the PCM opens up the actuator too much. This excessive amount of EGR combined with the air coming in via the throttle body leans out the fuel mixture, causing a lean misfire, which is the "stumble" or "hesitation" that is common as the DPFE Sensor fails. The DPFE sensor in the Focus is not very robust, requiring frequent (every 30k miles or sometimes less) replacement or a work around. Note that complete DPFE sensor failure is a very slow process, and the check engine light won't come on until the DPFE sensor is pretty much done for. If you're experencing stumble or hesitation while cruising, and think that it might be related to DPFE sensor failure. If the stumble goes away, then your DPFE sensor is more than likely failing. Of course, replacement of the bad DPFE sensor is the official recommended fix for this problem.

Jul 29, 2009 | 1998 Ford Ranger SuperCab

1 Answer

1996 ford ranger obd2 code 0402


check your egr valve its probably stuck open from carbon buildup and is letting too much exhaust recirculate you can take these off and clean them but with the age of your vehicle i would replace it

there is also a sensor that measures this that sometimes fails its called DPFE sensor it measures the amount of exhaust that is recirculate

not knowing what engine you have its hard to tell you ware the egr and DPFE sensor is located

May 17, 2009 | 1996 Ford Ranger SuperCab

2 Answers

Need location of the erg sensor 2000 ford ranger


The egr valve has two sensors. One is an EGR position sensor which is physically attached to the EGR valve. The other sensor is the DPFE (Delta Pressure Feedback EGR) sensor, commonly called the EGR pressure sensor. It's location varies depending on the engine you have. You can fine this sensor by following the vacuum hose on the EGR valve. It will be with in inches of the EGR valve. The sensor will be black (plastic) or silver (metal), have two or three vacuum ports and an electrical connection on it.

The vacuum pressure sensor is a high failure item on fords. Any Ford parts department will have one in stock, as well as some aftermarket parts stores.

The new sensor may not look exactly the same as the old part, but will have all the hook ups as the old one. You may also need to replace the vacuum hose to the sensor as well

Feb 24, 2009 | 2000 Ford Ranger SuperCab

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