Question about 2002 Ford Focus

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And ????

Posted on Apr 22, 2013

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: check engine light.

you have a vaccum leak.check for cracked hoses

Posted on Jul 22, 2008

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Check the hoses to the DPFE sensor from the exhaust pipe, the sensor is near the EGR valve, if the hoses are ok then replace the sensor, careful not to tear the special heat resistant silicone rubber hoses, they are about $10 each and ordinary rubber hose will burn up.

Posted on Nov 24, 2008

  • 3 Answers

SOURCE: Airbag light on - code 52

You need to completey clear your codes first if the problem continues it could be a defective clockspring.

Posted on Mar 28, 2009

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SOURCE: Check engine light on, Dtc

Hello, since I do not know if you cleared the computer on your vehicle, the first thing I will remind you of is to clear the computer after making repairs. The Errors can continue to show for 25-35 Startups after the problem is fixed. Both Autozone and Oreillys will scan and clear your computer for free.

Next, usually on older 4.6 V-8s' but on some other models the EGR passages below the Airhorn would clog with carbon. All you need to do is remove 8 bolts and clean the groove under the Airhorn gasket and then replace the gasket. Many, many times it is not necessary to replace any other parts.

What happens is the Diagnostics are wrong because they do not measure EGR flow at the source. Flow is measured after the EGR Valve, and after all of the Solenoids. Obviously all the parts down the line can't work if there is no flow from the manifold to go through them. Quite a money maker for the Auto guys.

I hope you find my solutions very helpful in solving your problem.

Posted on Jan 06, 2011

  • 1975 Answers

SOURCE: P1405 Differential Pressure Feedback Electronic Sensor circuit Upstream Hose

I wasn't sure of your engine sizw so I went with a 4.6 liter engine. You are having a problem dealing with the EGR circuit. Below I gave you a picture but there are several tests that should be done to be sure this is the exact problem. Depending on your other codes they could and most likly are related. You need to take in to account all of them depending what the are. One problem could cause another code to come up is what I'm saying. I can tell you this, if it turns out to be the DPFE sensor you need to change out the EGR as well. They are calibrated together. In the picture below you can see the upsyream hose and I would check it. I'm just wondering what the other codes are. If you have any questions you can reply to this or email me at with them. Like I said I went with ine of the 2 engines that your vehicle came with for that year.


Posted on Nov 19, 2011

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1 Answer

What does DTC P1405 mean?

Clogged EGR valve or sensors. P1405 Ford DPFE Sensor Circuit Upstream Hose

Apr 29, 2015 | 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..)


Dec 29, 2011 | 2002 Ford Expedition

1 Answer

P1405 code

DTC P1405 - Differential pressure feedback (DPFE) sensor upstream hose off or plugged
Verify both hoses are connected to the DPFE sensor first. Ford has two versions of the sensor commonly used of this generation of modular engines.

The first uses a pair of flexible hoses to make the connections from the EGR tube to the sensor. The hose may fail and cause this problem.

The second type of DPFE sensor is stalk-mounted. The two tubes from the EGR tube come up to the sensor and the sensor is just pushed down onto the ends of the tubes and is secured with hardware.

Inspect to see which type you have and whether there are any obvious connection failures.

Hope this helps (remember to rating this free answer).

Oct 10, 2011 | 2001 Ford Escape

1 Answer

Code p1405

P1405 FORD - Differential Pressure Feedback Electronic Sensor Circuit Upstream Hose.

This means either the EGR position sensor hose is pulled off or damaged or the sensor is defective. The sensor is referred to as the EGR (exhaust gas recirculation valve) DPFE sensor.

Aug 29, 2011 | 1998 Mercury Sable

3 Answers

I had a diagnostic test done on my 2000 s type jaguar and the code p1405 came up. can i get any help wit htis

P1405 DPFE Sensor Upstream Hose Off Or Plugged
This is actually going to be real easy. There is a sensor with 2 rubber hoses. It probably has a hole in it. This is a black sensor with 2 screws to hold it in place.

May 20, 2011 | Jaguar S-Type Cars & Trucks

1 Answer

What is. P1405

P1405: Delta Pressure Feedback (DPFE) sensor upstream hose off or plugged. This DPFE sensor is a little black box with two black lines going in/out of it connecting to the EGR tube. Depending on the car it is located in different places. This is a common problem in the Focus and is usually a problem with the sensor itself and not a hose. It usually gets replaced in this case. Without knowing what model this car is I can't really tell you where to look, but it will be close to the top side of the engine towards the back. You may want to check for any lines you see that are disconnected. If nothing obvious stands out you may want to take it to a shop. This isn't an urgent problem, it is part of the car's emissions system.
This picture below is just a general idea of what the DPFE sensor looks like.

Apr 18, 2011 | Ford Expedition Cars & Trucks

1 Answer

I have an error code p1405 on my 2004 lincoln navigator - what is

DPFE Sensor upstream hose bad. Google DPFE Sensor location. Then remove and replace or clean hoses, Clean connectors at sensor. If this does not clear problem replace Sensor.

Mar 22, 2009 | 2004 Lincoln Navigator

1 Answer

I am having trouble getting my check light to go off after I had it checked and the EGR valve was replaced. The light comes back on after about 15 miles of driving and the code reads EGR poor flow. I can...

Insufficient EGR Flow Detected

Possible Causes:
DPFE sensor signal circuit is shorted to ground
DPFE sensor VREF circuit is open between sensor and PCM
DPFE sensor downstream hose off or plugged
DPFE sensor hoses both off, loose or damaged
DPFE sensor hoses connected wrong (reversed)
EGR orifice tube is damaged or restricted
PCM has failed
And what sets the code is…….Engine started, engine running in closed loop under steady cruise conditions, and the PCM detected the DPFE sensor input indicated insufficient EGR gas flow. Run the KOER Self-Test, and if DTC P1408 is present, the fault is currently present. This code sets in 2 Trip(s). The light will stay on until the cause is repaired. A bad EGR valve is only on possible cause.

Hope this helps,


Feb 28, 2009 | 2002 Ford Mustang

1 Answer

CODE P1405

Check the hoses to the DPFE sensor from the exhaust pipe, the sensor is near the EGR valve, if the hoses are ok then replace the sensor, careful not to tear the special heat resistant silicone rubber hoses, they are about $10 each and ordinary rubber hose will burn up.

Oct 16, 2008 | 1996 Ford Mustang

1 Answer

1997 ford explorer V8 5.0 engine

P1405-Differential Pressure Feedback Electronic (DPFE) sensor upstream hose off or plugged - or cracked.

I believe it is on the driver's side of engine about half-way down. also, check all other hoses for damage

Jun 03, 2008 | 1997 Ford Explorer AWD

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