Question about 2002 Ford Focus
CHECK ENGINE LIGHT IS ON
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Posted on Jan 02, 2017
SOURCE: 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.
Posted on Nov 24, 2008
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
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 email@example.com 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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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.
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