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Cayman 718 GPF Failure

Hi 911Hillclimber

Without Prejudice

Thanks for that good news, I will be going to the Harewood Hill climb event in May, so it will be good to chat to anyone that's interest in our campaign.

Unfortunately we had 2 more owners with GPF issues contact us over the weekend.

The usual, your filters blocked, 9K to fix it, and no you can't see the GPF diagnostic report.

I would like to offer another thought process challenging our dealers insistence that these fiters are blocked 100%.

Please look at this screenshot information below.

Remember the Catalytic Convertor and GPF filter are one unit on these cars.

Funny we have not seen, or heard of any of these codes being present on any of our cars.

Hopefully Porsche Technical could give us an answer of why these Cat codes are not present

Why are Porsche Technical not looking at the lack of back pressure in these filters, they have all this data from the Vehicle Analysis Logs, they won't let us see.

It's been the same on all the cars I have dealt with.

The delay in repairing Paul's car confirms that they are looking in the wrong place, two modified GPF filters fitted within 800 miles.

Two of our vehicles have had complete engine strips looking for signs of oil consumption, and nothing was found to be wrong.

In their belief that the Ash content is real.

So why is it taking so long, and why are dealers still trying to charge our owners, when they know it's not the drivers fault, these cars are failing and they certainly do not need a new filter.

Regards
Dave
 

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Hi Scrounger,

Without prejudice

It didn't stay under the carpet long, end result was a fine around 4.1 billion.

That was concerning the control of gas emmisions, we are looking at the control of these petrol particulate emision systems on our cars, and why Porsche had to bring in a modified GPF filter within the first year of production in 2019.

Thankfully they admitted this on the 3rd March just gone.

An internal document was posted out written by Oliver Hayward to all the dealers with instructions on what to do when the DTC code P242F comes on, oil ash exceed.

We just need to hang on, we have proved 100% it's software, we just need more evidence to push this point.

We have plenty of patience, and this should now be covered by a recall.

The dealers surley can not continue with this blatant course of miss diagnosis, bearing in mind they have seen and are aware of this important and relevant document.

In future our owners when faced with this situation will make an appointment with the dealerships Service Manager, or General Manager, and discuss the existence of this information and its content.

The owner will then request that a case number is raised with Porsche Customer Care and the Technical Department, on the basis of this known, and proven case of a Manufacturing Emission Defect on our Cars.

Two years of our research and all the owners experiences, and data collected will support these cases.

Let's hope common sense will prevail.

Regards
David
 
Hi All,

Quick update on my car -

PAG have advised dealership to fit a new DME to my car late last week.
This arrived from Germany yesterday and is in this process of being fitted and tested.
At this point I am unaware if this is based on an original spec part or has been modified in any way.

Will update once I have results back to me by OPC.
 
The current situation for Paul and others affected is beyond farcical Dave, compounded by Porsche’s stonewalling on the issue when it’s obvious that something appears to be wrong with the software, requiring investigation at the very least.

Dan’s suggestion of a software update leads me to ask where the GPF monitoring software resides? If it’s in the DME itself that leads me to suppose that this could require a complete DME replacement, otherwise you’d assume that Stuttgart would have instructed the dealers to conduct a software update as a matter of course? Do you have any insight on the subject?

In Paul’s case it’s clear that replacing the GPF for the third time - and presumably with the latest-spec component - still hasn’t solved the problem, so it could be that replacing the DME will be the next step?🤔

Jeff
Jeff,
You did call this out several weeks ago …👏👏👏
 
Great news Dave. Like you saay, if consumers are aware of the TSB from Porsche DE then they can raise it when booking in with the OPC.

You you have a copy of the TSB or the reference number so it can be quoted? I'm a big believer in knowledge is power and some OPC are totally oblivious.

Dan
 
Hi Dan

Without Prejudice

This is the top of the front page of the letter.

This can be used as a reference to the current issue on our cars, that Porsche are fully aware of.

Sadly the freedom of information act does not apply to vehicle Manufacturers.

Hopefully someone in a Porsche Service Department can tell us why this information has not been communicated to their customers who have been struggling with this problem for the last 2 years and possibly longer.

I have said this before, and I will say this again, there is nothing out there that can compare to our 718 cars, the driving experience, the performance, the whole experience is un matched.

Let's put and end to this, and sort this software out.

Dave
 

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Hi Guys & Girls

Great news, a thousand more views since the weekend, thanks to all of you that are taking an interest in our campaign, it's really appreciated we need your support.
 

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Hi Guys & Girls

Without prejudice

I would like share with you all, VW,s information regarding re setting the ASH LOAD on their vehicles.

To reset the ash load in a VW's Gasoline Particulate Filter (GPF), you'll likely need to use a diagnostic tool like VCDS to perform an engine adaptation. This is typically done after cleaning or replacing the GPF to ensure the system recognizes the new state and adjusts accordingly. The ash value is often a calculated value that can be reset to zero or an appropriate baseline.


  1. 1. Diagnostic Tools:
    VCDS (Volkswagen Computer Diagnostics) is a common tool used for VW diagnostics, including resetting the ash load. Other diagnostic tools may also be capable of performing this function.

  2. 2. Engine Adaptations:
    The process involves performing engine adaptations via the diagnostic tool. This allows the engine control unit (ECU) to recalibrate the ash load value based on the new condition of the GPF.

  3. 3. After Cleaning/Replacement:
    Resetting the ash load is typically performed after the GPF has been cleaned or replaced, ensuring the ECU accurately reflects the current state of the filter.

  4. 4. Calculated Value:
    The ash load value in the ECU is often a calculated value, not a directly measured value. Therefore, resetting it ensures the ECU's calculations are accurate.

  5. 5. Procedure:
    While the exact steps vary slightly depending on the specific model and ECU, the general procedure involves accessing the relevant parameters within VCDS (or a similar tool), selecting the engine adaptation function, and then following the prompts to reset the ash load.


  6. 6. Example:
    On a VW T6 Transporter, one thread discusses using VCDS to reset the ash level, highlighting the importance of performing the adaptation after cleaning or replacing the DPF (which is equivalent to the GPF).
    7. Troubleshooting:
    If the ash load value doesn't reset correctly, or if the GPF continues to show issues, it's important to verify the differential pressure sensor readings and ensure the GPF itself is not damaged or blocked.
    Funny that our oil ash value is a measured value, could this be the answer.

    It looks like its a really simple thing to do on these cars, maybe our Porsche Technical Department needs to have a chat with these guys and sort it out for us.
    Regards
    Dave










 
Hi its me again.

Think I have the answer

Could it be that Porsche are using the measured oil ash value in the software, when it needs to be in the calculated value that is always at zero.

This maybe why the DME cannot carry out the function to zero the value.

These values are upside down

Enclose a copy of page 42 GPF data, have a look at K230 and K231.

Regards
Dave
 

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Sorry its me again,

Without prejudice

It's the same on the 992 car I looked at a month ago, when Porsche kindly paid for a Bank 1 GPF filter.

We said at the time the GPF information didn't make any sense, just like our 718,s

Enclose the 992 GPF data showing the oil ash measured values at 100%, and 58.04%, nothing in calculated.

We have said this before that this measured value isnt correct.

VW are using the calculated value for Ash management which is different to our cars, and they don't seem to be having the problems we are having.

Just a thought.

Dave
 

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