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Intermittent fault code


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I've got an interesting one intermittent EML no loss of performance, fuel economy good 55ish, car does long runs shortest is 23 miles, I can't nail down the point the EML comes on it just pops up, It resets using Forscan and can stay of for 200 + miles or can come on in as little as 5.

Can't find any physical faults, EGR is clean, hoses to sensors intact, done a static regen

forscan screen image attached

image.jpeg

Edited by pragmatix
Added missing image
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check the part number stamped on the sensor, i might have a 2nd hand about somewhere you can try if its the same.

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Hi,

could you tell me what voltage are present at the plug going to the dpf pressure sensor ?

There are 3 wires : 1x 5V (or near), 1x 0V (Ground), and you must check the last.

Very easy : the black probe of your Voltmeter in the middle terminal of the plug (Gound), then probe the 2 others.

It takes 3min to do.

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  • 4 weeks later...

If that is the only error code, it sounds pretty specific that either the dpf is partially blocked, or the pressure sensor is reading high for some reason.

Perhaps you could try disconnecting the hose(s) from the sensor, see if it then says the reading is too low. If so, it must be the dpf, or the hoses to the sensor. If it still reads high then it almost has to be the sensor.

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I think the sensor looks like this. It should have two small hoses that find their way down to the DPF unit on the exhaust.

Also see:

http://www.ebay.co.uk/itm/OEM-PRESSURE-SENSOR-3M5A5L200AB-F-FORD-1-6-2-0-2-2-TDCI-DPF-EXHAUST-DIFFERENTIAL/141975663295?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20140122125356%26meid%3Dff1cf0221a384275a600593b4ef42c24%26pid%3D100005%26rk%3D3%26rkt%3D6%26mehot%3Dlo%26sd%3D252360997695

Seems to say it is the right one, but you had better check before buying, if you need to.

Peter.

sensor.JPG

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Ta will take a look, had a look can't see anything like that on the bulkhead in the engine bay,

Edited by pragmatix
Now looked
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It is looking to me as if the sensor is in the left hand front wheel arch, behind the wheel arch trim.

The type & pictures in this manual are tiny, I can barely read it, but it still looks fairly clear. See:

  http://workshop-manuals.com/ford/mondeo_2007.5_02.2007/mechanical_repairs/3_powertrain/309_exhaust_system/309-00e_exhaust_system_2.0l_duratorq-tdci_(dw)_diesel/description_and_operation/removal_and_installation/diesel_particulate_filter_(dpf)_differential_pressure_sensor/

Also I have extracted two pics from it:

DPF1.jpg

DPF2.jpg

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Thank you, that kinda makes sense, will have to get a set of wheel arch trim clips before I look at that, from past experience they are a one shot use, or maybe they are just old on my car

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  • 5 weeks later...

why I ask is that it could be in 2 postions, either behind wheel arch liner as previously described or low down on bulk head like this one I found.

to the left of battery hiding behind the scuttle panel drain hose, pushed drain hose back so you can see

2016-07-08 17.11.45.jpg

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