Has anyone have this issue with pdcc on their 991? Here is the link discuss. I have been searching and this is only thread that discuss this in the turbo section.

https://rennlist.com/forums/991-turb...-messages.html

 

I guess not many of owners here have this issue, or want to talk about this. I am not a troll if you are wondering, my 991 is a daily driven whith over 6k since Dec 2013. There is one corner on the way home that I tackle almost everyday, a sharp corner, and once in awhile I get pdcc warning, it resets when restart.

Other than that, car runs great.

 

Keep us informed once you get it sorted.

No problems with my 13 C4S w/15K on the clock and I drive back roads like I'm being chased my mad max.

 

thats how we should be driving, so much fun, I don't throw it around like I do with my 1M ...yet.

 

I have SPASM with PDCC and I daily drive my car. Now at 20k and no errors yet. Daily drive is not too aggressive, but do at least one run a week through a twisty long(isn) drive and no problems so far.

 

try sharp 90 degree corner at good rate of speed

I have no problem through those smooth twisty corners, those pesky sharp ones that accelerate out of gives the pdcc a problem, no fishtail at all, just a clean turn in, with more speed than normal.

 

I've had the same PDCC fault warning four times now while on track--triggered each time by high-G turns. The car goes into what feels like a limp mode where it kicks itself out of Sport Plus--feels like you're suddenly driving a Toyota Corolla, which is not fun in the middle of fast traffic on the track. Fault clears when car is stopped and ignition cycled.

My car is a '14 Carrera S. This is happening after the WE18 campaign to update the PDCC control module was done to the car.

Do more searching under my name in this section--I've posted about this a few times.

 

I read the manual regarding the PDCC system, my take away was that the system was static. If one engaged the sport plus toggle it stiffened the dampers and the anti sway bars a set amount. Is this a incorrect assumption? Does it in fact provide real time on the fly adjustment according to load? I ask because the latter system would be more prone to glitches.

 

There's some moving pieces constantly adjusting from sensor inputs.

http://www.excellence-mag.com/of-not...l#.U-TLGPldV8E

 

[QUOTE=CSK 911 C4S;11562632]There's some moving pieces constantly adjusting from sensor inputs.

Thank for the information. The last sentence in that rundown is interesting.

 

I think I've done a few of those, but in the name of science I will try a few more tomorrow and report back. 90 degrees, good rate of speed...

 

I've read your PDCC fault on track thread, and post #6 makes sense, I attempted many more on my way home and to work each time and the fault comes up about once in every 7ish attempt, sometimes never happen in as many weeks. Maybe, some of those times I don't push it hard enough for the car to "freak out"
Thanks for the response guys.

 

***WARNING: BEWARE OF PDCC ON TRACK***

Tuesday was my 1st day at NHMS testing new C4S with 3,000 miles. I spent the first two run sessions SLOWLY ramping up my speed and by the 3rd session I was running at about 7/10's when I suddenly lost control in turn 3 near the wall as I made the hard uphill transition to the outfield course.

My suspension seemed to "let go" pitching the car suddenly. I noticed the orange PDCC fault message on the MFD: "Possible to drive on carefully". I suspect that the light may have come on exiting the prior turn which also had a hard transition between the infield and the track.

The PDCC system subsequently reset upon engine restart. However, my track days are on hold until Porsche comes up with an explanation and fix. I will have my local dealer pull the code & log the error so PAG has a record.



2014 Agate C4S w/: X51; Sport PASM; PDCC; Aerokit Cup front spoiler w/ grill mesh & carbon fiber lip extension; Akrapovic exhaust w/ black ceramic tips; Techart type II wing; Techart center radiator vent; Brembo GT brake upgrade 380 mm F&R; Michelin SS 265/20 F; 305/20 R

 

Can you tell us from your g meter how many g's you were pulling? Since every post is about cornering and pdcc faults, it may be too much load in the corners for the hydraulic pump to overcome? It may also be a combination of g force and a bump or angle that the pump has to overcome in which case that's an engineering oversight. I have pulled 1.09g in my 991 C4S and not had this problem yet. Any insight?

 

It's absolutely idiotic and a huge safety issue to design a system to "let go" and turn to mush under load like that. This needs to be identified and fixed by Porsche ASAP.