Petrol Particulate Filter Failure

[RandallF]

One of our members is reporting the failure of the Petrol Particulate Filter (PPF) fitted to his car and that its replacement is not covered by his extended warranty.

He says:

"I have enjoyed several Panamera`s over some 15 years and owned, from new, a 2019 hybrid.

The vehicle has been serviced by the Cambridge main dealership, and with 110k miles on the clock, enjoys the Porsche extended warranty.

On a recent journey a fault appeared which on recovery back to the dealership some 2 weeks ago has been diagnosed as a Petrol Particulate Filter.

The dealership advised yesterday that this part (some £2,500 + fitting) is not covered by the warranty which I find amazing!!. I wondered if you were able to share any such experience."

Have you had a similar experience? If so, we would like to hear from you.

Randall

 

[Motorhead]

Hi Randall,

For reference you might want to have a look at this long-running post on the Cayman forum where GPF failures have occurred on a number of earlier 718 F4-T cars without any warning signals to run the regeneration procedure. Again, owners with the Porsche Extended Warranty have found that they’re not covered for a replacement which, since the GPF is combined with the cat converter, means an eye-watering cost around £6k!

Cayman 718 GPF Failure

Hi Everyone, I have a 2019 Cayman 718, I have owned it for 13 months and purchased it from a Porsche Dealership as a Porsche Approved Pre-Owned Vehicle with 2 year warranty. I had an engine control fault come up on the dash, I contacted my local OPC and they informed me a long as the message is...

www.porscheclubgb.com

Jeff

 

[RandallF]

Thanks Jeff,

The Cayman thread makes sorry reading.

What is happening is a not uncommon gripe amongst not just Porsche owners, but by other premium car owners as well with an extended warranty.

Without looking at the small print of their Agreement, its a little bit of a swerve when the use of the words 'filters excluded' include the PPF, when in truth most owners would naturally believe what was being referred to were the air and oil filters and not think of the PPF as being excluded as a serviceable filter. A bit more clarity in the Agreement would probably save a lot of angst.

From what I understand a vehicle's warranty will only cover a PPF for structural failure. A blocked PPF is not covered because the issue originates upstream of the PPF.

A PPF being 'a service item' will need to be replaced at the end of its life. The lifespan of a PPF can vary by vehicle manufacturer and how the vehicle is driven and maintained. PPFs are designed to last more than 100,000 miles, but many will last much longer if the vehicle is operated where the average journey length is over longer distances. All a bit of a lottery.

I personally don’t agree with the stance of the manufacturers, but it’s been this way across the industry for some time as far as I know.

Randall

 

[Cyclemotor1958]

Hi Randall
Sorry to bother you
My name is David and I have been campaigning for the last 2 years to stop Porsche and their dealers charging our 718 owners for fitting GPF filters that are not faulty.
Your post at the beginning of the year looks interesting, would you mind contacting me on 07769 590119 to discuss the outcome.
Kind regards
Dave

 

[MartinP]

I'm sure you'll have seen the article by Richard Gotch in the March edition of Porsche Post on just this topic. It refers specifically to 718 Boxsters and Caymans and is a good assessment of the various factors surrounding the issue.

 

[Cyclemotor1958]

Hi Martin,

Without prejudice

Yes a well written assessment of how these GPF filters should work, and also the challenges Martin Werner and his team faced in designing emission systems on these cars.

Richard wrote on the first page of his article that the exact nature of the failure is yet to be pinned down, after almost two years.

And on the last page of the article he wrote, what we need is answers about why this is happening.

Fortunately after almost two years of research, collecting data, engaging with owners, and reversing Porsches decision to charge our owners for replacing their GPF, we can confirm the issue is software 100%.

What we need now is Porsche to confirm we are right, and confirm we have the answer at last.

Hopefully it will be soon

Regards
David

 

[JohnCRS]

Hi all. As Dave says, he has been working on this for two years now. The piece in Porsche Post was written by Richard using the information gained over this time and tracked through the thread referred to above. It came about after requesting the club's support in raising the matter with Porsche GB. We were assured that the article would be read by Porsche GB and it was our best hope of getting a response. Unfortunately Richard has now left the club and we are working with the club officials to find another way through. We still need answers.

Please note that we (Cayman's) have been dealing with a diagnosis of 'blocked GPF' across a fairly narrow production range of vehicles. Dave is now receiving reports of GPF issues on other models and other years, but the numbers don't yet add up to the significance of the 718, 2019 Caymans. Perhaps they will.

Concerning this particular Panamera, it may be that, after 110k miles, the filter has simply failed for one reason or another. Catalysts can crack up, GPF's can break down etc. etc. If you have a fault code, please let us know. Otherwise the issue is whether or not this failure should be covered by the extended warranty. Of course it should - the GPF is not listed as a service iteme anywhere in the service documentation. There are probably no references to it in the checks that are part of the service. However Porsche are under the impression that owners will put up with a great deal, including being told to stump up £2,500 to get the CEL turned off.

With the Cayman the price is currently >£9000 but, with Dave at the sharp end, we are gradually proving them wrong and fighting it.