S-Max Reset Differential Pressure sensor learned values

[fendy]

Hi all,

After much investigation, many error codes, engine light going loco and a lot of frustration regarding DPF and the likes I came to the conclusion that on my 2008 S-Max the rubber DPF hoses leading to the Differential Pressure Sensor were toasted and ruptured. After replacing them, the pressure reading in forscan was 4.5 KPA with the engine off, so also replaced that one for a new one. The workshop manual states that after replacing the sensor, one should perform the "Differential Pressure Sensor reset learned values" procedure.

When trying to perform this service procedure in Forscan it starts, goes to 1% and then after 10 seconds states that the procedure was interrupted after which Forscan also lost the connection to the car, which requires it to be shut down and disconnected for 30 seconds.

I tried it on the latest IOS version, the latest Windows version and also some older Win versions but it still doesn't work.

Is this procedure really needed? I now get readings of 0,3 KPA when running idle, 0,8 on 1500RPM and a 1,3 at 2500 rpm, under load it gives a little more.
I've read that some other users experience similar issues.

My engine type is AZWA, which is (in) a 130HP 2008 S-Max automatic.

Any and all help would be greatly appreciated

[FORScan]

This is known issue on S-Max Mk1/Mondeo Mk4 with some PCMs - DPS reset service procedure "crashes" PCM (so it stops to respond and you have to turn ignition off for some time to return it back). This is not a FORScan problem but PCM firmware bug. Nevertheless, as far as we know, the procedure performs the DPS reset well.

[fendy]

First of all, thanks for the reply! Appreciate it!

So what you’re basicly saying is that inspite of the error message the reset did work and all should be well now?

It did go exactly as you stated with having to switch off the ignition and so on...

Again, thanks ever so much for your support!

[gomonsen]

Hi
I had the same pronlem with a Transit 140T350
I contacted FORScan and they made a test version.
In this release I was able to do the reset without starting the engeine.
It sounded like they will apply this fix in the next version.

[diymechtony]

This is known issue on S-Max Mk1/Mondeo Mk4 with some PCMs - DPS reset service procedure "crashes" PCM (so it stops to respond and you have to turn ignition off for some time to return it back). This is not a FORScan problem but PCM firmware bug. Nevertheless, as far as we know, the procedure performs the DPS reset well.

Oh wait a second. I am buttkicking this thread just because this is relevant info for me as well.

I posted a question related to this Reset procedure of the DP sesnsor to learned values since I had to replace my DP sensor recently as last week.
But everytime I started the procedure the was thrown an error as in "procedure interrupted"

Now if I understand it corrected, you guys say that the procedure is still being executed inspite of the "error" that is thrown at you by the FORscan software. Is that true?

I run the latest version of the FORscan software by the way and paid for an extended license.

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