Cayman 718 GPF Failure

[Cyclemotor1958]

Hi 911Hillclimber

Without prejudice

Thanks for responding so quickly,

It's such a simple question, when you think about it, we just need the answer, and they will have to give us the answer.

Will keep pushing on, I have lots more info to send out, we just need a response to this especially from Porsche Reading Technical.

It's about time they engaged with us, we are trying to save Porsche money, and the embarrassment of a serious miss diagnosis on this fault.

Keep in touch

Dave

 

[Cyclemotor1958]

Hi Guys & Girls

Last post of today, some really good news for once.

Just checked our views on our GPF campaign, we are currently at 58K views.

On the 12th of September last year we had 15K views, that's an increase of 43 thousand views over the last 8 months.

This just shows that this campaign to get our cars fixed is gaining headway, and it's all Thanks to you.

Can we hit 60K before the end of the month

Dave

 

[Scrounger]

Unfortunately Dave the only way it will gain headway is if a solution is offered by Porsche. Unfortunately views don’t provide this (I wish they did) but what they do provide is more evidence that those affected can give to their OPC. It’s sad that Porsche AG won’t step up to the plate but it does beg the question whether Porsche GB are protecting the mother ship from the issue.

Dan.

 

[Paul-718gts]

Hi All,

Latest update on my car
After having the 3rd GPF fitted (new not a refurb)
2 differential pressure sensors in 6 months
An engine out strip down and rebuild
Live road testing with computers monitoring

And to top that a new DME fitted as recommended by PAG..last week

20 mile road test and the GPF registered 25% full…

Porsche UK Reading technicians are now finally attending the OPC this Weds.. to do what ??? I have no idea..

It’s getting very close to a stage where the people that designed and built these cars can’t fix them… fingers crossed it doesn’t get to this point .

And for the OPC’s that still quote it’s driving style, wrong oil, etc , etc..

It’s complete BS as my case is 100% proof, as all this work and testing results has taken place over the last 5 months by Porsche since my car has been back at the OPC…

Let’s see what Wednesday brings…

And finally a big thankyou to all that follow our journey..

Hi All,

Latest Update -
3 weeks ago a team from Porsche Reading turned up at my OPC to fix my car.
After spending the whole day completing various testing and resets (sorry this is the only detail I have been provided) they apparently manage to obtain a zero reading on the 3rd GPF fitted that must have completed less than 100 miles.

Car was road tested over night and a VAL report completed the following day..

48% full after completing a road test of around 40 to 50 miles …

By this time the Experts ( ) from Reading had returned back to their centre of excellence().

My understanding is that following this test result a conversation between Reading and PAG took place and the OPC was asked yet again to inspect for signs of oils on the inlet manifold… (this has been completed so many times I think they have got this task down to McLaren pit stop standards)

And surprisingly no sign of oil…

At this time my car is still in bits awaiting further instructions from the brand …. Don’t hold your breath

I have yet again suggested software as the probable root cause for the umpteenth time over the last 10 months but still the brand chooses not to listen..

I have managed to obtain a couple of pictures of the 2nd GPF that was fitted last Sept that I estimate to have completed less that 1000 miles and it doesn’t appear to look evident of showing signs of being 50% full.. as the previous readings have suggested…(pictures attached)
You can make your own opinion and comment on the pictures..

As of next week my car has been with the brand for 20 weeks (since early Jan 25) after having the 2nd GPF fitted in Sept (24) last year and the guys that designed and built it still can’t fix it ???????

 

[Scrounger]

Hello Paul.

I think you may well be the test case for this issue and I really hope it leads to a positive result for you and others. I would like to think that as a minimum PORSCHE have put you in one of their loan cars and plan on compensating you for the inconvenience you’re experiencing.

Best of luck.

Dan.

 

[911hillclimber]

All clean as a whistle it seems.
Not so Porsche.
All about money here I think, a veritable flood gate has built up and this will be a key consideration but they must realise the day of judgement is soon coming and the problem has to be addressed conclusively.
Bolting things off and on is easy, fixing software will be hell in comparison.

20 weeks off the road, experts arriving and speeding away must give some grounds for full recompense via the Laws of this country?

 

[Cyclemotor1958]

Hi Guys&Girls

Just got this information from one of our friends on the 718 forum.

He has found and purchased a reasonable priced diagnostic tool that can read your oil ash % levels.

Enclose his detailed post for your attention.

I received a £70 ThinkDIag OBD2 scanner yesterday and can confirm that this device will show the GPF ash load etc data on a 718. Device was tested on a MY2022 base 718 2L Cayman.

The menu system on this reader is somewhat obscure. The route to read the GPF data is as follows:

Connect to the ThinkDiag dongle and select 'All Systems Diagnostic'. Let the app connect to the dongle, search for the VIN, confirm the car make/model etc and then:

System Selection
DME (Engine Electronics)
Read Data Stream
K_Catalytic converter
check boxes for the following:
K210_Particulate filter, bank 1 - loading level
K211_Particulate filter, bank 1 - soot load calculated
K221_Particulate filter, bank 1 - soot load measured
K230_Particulate filter, bank 1 - oil ash load calculated
K231_Particulate filter, bank 1 - oil ash load measured

This will return readings for the above. You can then save the readings in a pdf report within the ThinkDiag app.

I had a quick look around the menus to see if this value could be reset via the ThinkDiag. I couldn't see any obvious route to this; however I did note that in the 'Special Functions' section of the DME module there is a menu option to initiate a GPF re-generation. I didnt try this.

At least this way owners can monitor their own K231 ash load values over time rather than having to rely on OPCs to (maybe) give them the data, and at cost.

Thanks again to our friend on the 718 forum

Regards
Dave

 

[Cyclemotor1958]

Hi its me again,

My 718 forum friend has sent some more information regarding this diagnostic tool

ThinkDiag dongle & app are fairly well known in the car world - they're the cheapest way to get a fully bidirectional OBD2 reader and writer that can do many different makes & models. Most people buy them to change factory settings like Start/Stop functionality; this particular one also has fairly extensive data reading / reporting abilities too.

The dongle comes with a 1 year licence for your car manufacturer of choice, chosen at setup time; other manufacturers & periods beyond a year are purchaseable via the app for a few £10s each.

I found one on Amazon and he confirmed it's the same as the one he purchased, enclose snapshot.

Dave

 

[Cyclemotor1958]

Hi Guys & Girls

Without prejudice

Just a quick update on what we are trying to do today.

And also a re visit to a case I worked on last year.

I have been working with an owner of a 718 2019 for the past month, trying to reverse a Dealer decision to charge the owner 9K to replace a GPF filter the car doesn't need.

We have asked for an additional back pressure check, to confirm the GPF is indeed blocked.

Unfortunately after a month of trying to get this check done we are no further forward.

It seems that the information that Porsche Readings Technical department have at the moment, regarding the fitment of these expensive GPF filters and it not fixing the fault, has not been communicated to their Network.

Surely this miss diagnosis needs to stop, it's upsetting to our owners, it's embarrassing for our dealers, and it should not be happening.

However we did had some good news on Monday for one of our owners, we managed yet again to reverse a decision to charge the owner 9K to fit a new filter, based on the low differential pressure sensor reading present on a supposedly blocked filter.

Going back to Porsche Reading last year I spent 5 months trying to convince them that the low differential pressure sensor reading, contradicted the oil ash % level 100%, and the need to fit a new filter.

Back then the invoice to the customer was over 9K.

We finally convinced them to look again at the GPF report page 42.

After the repair was completed, Porsche Customer Care wrote to the customer and apologised and explained the following.

Whilst Porsche are unaware of an inherent fault with the GPFs on our vehicles.
The fault code which was present durring the investigation on your vehicle did allow the Centre and our Technical and Warranty teams to identify the fault you had experienced to be that of a Manufacturing Defect.

Well it's a shame that Oliver Hayward the Porsche guy who wrote the internal memo in March confirming that all vehicles with a production date later than December 2019 should already had the modified OPF filter fitted, was not consulted.

Because Porsche have known about this issue for a long time.

So what we need to do, is to stop trying to charge our owners for fitting GPF filters that are not at the moment, fixing this problem.

This needs to communicated out to all the Dealers.

We need to concentrate on the Algorithm / software issue, because we have proven that on all these cars that have had new filters fitted, they are all coming back with the same oil ash % nonsense.

We only have to look at Paul's experience to understand after everything that's been thrown at this fault, the car is still not fixed, and still in the garage.

Going back to our 718 owner with our requests to re check the back pressure, he has told his Service Manager today that I will act on his behalf in trying to reverse the decision to charge him for a filter he doesn't need.

Hopefully he will do the decent thing and ring me.

We have always tried to work with the Porsche Dealers to get this issue sorted, it's just a shame they don't want to work with us.

Sorry to go on, but its about time this fault was fixed.

I have enclosed a copy of a typical GPF report, page 42, for you to see what we see.

The differential pressure sensor reading is K251, and the oil ash measured load % is K231 this puts your light on and causes all this trouble.

By the way, we are now on 59K views, lets hit 60K before the month end.

Dave