Question about Mercury Sable
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Posted on Jan 02, 2017
SOURCE: 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
Posted on Jun 04, 2008
SOURCE: P1405,P0141 F150 2001
Ford has problems with the DPFE sensors that has to do with the EGR. its just a code that points you in the direction of the problem. you could have a bad DPFE or egr or just a simple clogged hose. there should be 2 hoses on these f150s the only way to tell is by checking hoses otherwise you need more tools to check these things. a vacuum test on the DPFE sensor to see if it reacts.
the other code is an O2 sensor code. heater problem. could be different problems or a bad O2 can cause a rich condition cause low fuel mileage and also cause the EGR system to clogg over time.
I dont knwo what else to help you with because its one of those things that just needs to be looked at in person. your best bet is check the DPFE hoses. should be near EGR and look for rubber hoses connecter to a sensor. should have 2 hoses connected to it. Google a pic of one so you knwo what they look like.
Posted on Feb 09, 2009
look by the battery there is a 2 wire switch with 2 vac. lines hooked to it see if on of the lines are cracked
Posted on Oct 21, 2009
Tips for a great answer:
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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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