1.5 TDCI Fiesta P2002

[snakeydave24]

Hi there 

I have a 65 plate Fiesta 1.5 TDCI with 99k on the clock, The car recently went into Ford main dealer to have a few things done, New key, Thermostat housing, rear buses and a software update for the emissions...

2 days later I now have a EML with the code P2002, Now don't go down and reply, "oh your dpf is blocked" or "Oh you need to take it on a long run at high rpm"  because at the time the light came on the DPF was at 36% soot load and the car is driven around 40 miles each day on the motorway, I've plugged Forscan in and this is the data I'm getting, yes the soot load is now at 49% and the dpf will not do a regen, I did 115 miles in it yesterday and it didn't even try. The only abnormality I can find is the DPF inlet pressure is jumping form 655kpa to 0.2kph intermittently which I think is confusing the DPF and throwing the EML, I called an independent mechanic out and he literally said the same thing but as the car had been at Ford take it back to them 

I went into Ford and they weren't interested and said all we did was a software update it wouldn't be related and they can't look at the car until the 19th (No rush then) along with a £99 fee for looking into it despite me telling them everything above 

Now a few other questions.

I've not tried it but will it let me do a Forced Regen in ForScan with this code showing ?

Can anyone suggest what's causing it, my thoughts are that its the DPF Pressure Sensor ?

Where is the DPF Pressure sensor located ?

Is it worth taking it back to Ford ?

Has anyone else had any type of similar problem ?

 

https://www.youtube.com/watch?v=iaqJW4fihvc

https://youtu.be/06sXLlJ7luY

 

[snakeydave24]

So update, I cleared the fault and it was able to to a regen and the light was off until 3 days ago where it came on with the same fault. I’ve cleared it again so we will see how long it lasts. 
 

does anyone know of anything to look for that could be causing this fault ?

[snakeydave24]

Bump ? 
 

still having this issue 

[Tdci-Peter]

On 10/6/2020 at 11:06 AM, snakeydave24 said:

DPF inlet pressure is jumping form 655kpa to 0.2kph intermittently

Ford, in their infinite wisdom (?) seem to have changed from using a DP sensor with two hoses to the DPF, to a pressure sensor with just one hose. I can only guess that it is a gauge pressure sensor, and they are assuming the outlet pressure of the DPF is near atmospheric pressure, just a bit of back pressure from the muffler & pipe, that can (on a good day) be estimated and compensated for. The DP reading on Forscan stays zero, and I see no DP sensor (as well as the single port sensor) on the 7Zap parts diagram.

But regardless of this, the flashing 655kP to 0kPa is clearly very wrong indeed. 655kPa is 6.5 bar or 92PSI, a quite impossible pressure inside an exhaust system.

Sadly, the sensor seems ridiculously expensive, and I don't suppose there are a lot of used ones about. It is easy to test pressure sensors if you have the stuff (I used to, & sometimes still do, manufacture pressure transmitters, so it would be easy for me!, but not so easy for others, I know). I would recommend locating someone who can test the sensor, and /or measure the pressure at the DPF. It also could be a wiring or connector fault.

https://www.ebay.co.uk/itm/Genuine-Ford-Fiesta-Mk8-1-5-SOHC-Exhaust-Catalyst-Sensor-02-2015-1923249-/273421423756

and:

https://ford.7zap.com/en/car/59/no/15/1551/15402/97125/#5H209

[snakeydave24]

On 12/29/2020 at 11:05 PM, Tdci-Peter said:

Ford, in their infinite wisdom (?) seem to have changed from using a DP sensor with two hoses to the DPF, to a pressure sensor with just one hose. I can only guess that it is a gauge pressure sensor, and they are assuming the outlet pressure of the DPF is near atmospheric pressure, just a bit of back pressure from the muffler & pipe, that can (on a good day) be estimated and compensated for. The DP reading on Forscan stays zero, and I see no DP sensor (as well as the single port sensor) on the 7Zap parts diagram.

But regardless of this, the flashing 655kP to 0kPa is clearly very wrong indeed. 655kPa is 6.5 bar or 92PSI, a quite impossible pressure inside an exhaust system.

Sadly, the sensor seems ridiculously expensive, and I don't suppose there are a lot of used ones about. It is easy to test pressure sensors if you have the stuff (I used to, & sometimes still do, manufacture pressure transmitters, so it would be easy for me!, but not so easy for others, I know). I would recommend locating someone who can test the sensor, and /or measure the pressure at the DPF. It also could be a wiring or connector fault.

https://www.ebay.co.uk/itm/Genuine-Ford-Fiesta-Mk8-1-5-SOHC-Exhaust-Catalyst-Sensor-02-2015-1923249-/273421423756

and:

https://ford.7zap.com/en/car/59/no/15/1551/15402/97125/#5H209

Thanks, you were absolutely spot on, part replaced and car is all good now