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cardy
Newbie


Joined: 12 Nov 2019
Posts: 12



PostPosted: Tue Nov 12, 2019 5:49 pm    Post subject: 997.2 Targa 4s PDK issues Reply with quote

Hi Gents
I have a malachite green Targa 4s on brown natural leather
First post in a 911 forum
My wife has a 996 and I have the 997 in the title
118,00 km's
Checking in on what appears to be a major PDK problem

Total newbie on these forums so excuse me in advance if I botch this effort

My car had extended coverage to 100k from previous owner and the PDK had been tuned 3 times. Low speed pausing, 1st and R

Transmission emergency run message comes up
Here in Canada the cost to replace a PDK is $28,000 CDN ($16,400 pounds sterling)

Faults coming up were for low voltage and CAN?

(I have looked over old posts and seen info on temp sensors . .part#, ignition coils and battery). New battery put in 5 months ago FWIW

I'm upset with the garage I've used as he has tried a new mechatronics ($4k) and that has not worked .. is this a viable fix for a 997.2 ??

The code coming up now is P1733 - Shift Rod 3 Displacement sensor

Help appreciated. I feel like this garage is guessing and now defaulting to a new PDK. And could the mechatronics cause a new error like P1733?
 
  
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FZP
Estoril


Joined: 18 Jan 2015
Posts: 3851
Location: Cheshire


PostPosted: Tue Nov 12, 2019 6:25 pm    Post subject: Reply with quote

Hi mate,
First of all congrats on the car, sorry to hear about your woes. There will be others along shortly to assist hopefully. I just wanted to comment on the colour combo you have. Having never heard of malachite green, I had to Google it, and what a colour it is. Natural leather and it's a ripping combo. Apply that to a Targa and it's a unicorn. Lovely.
Hopefully you can get some direction from the guys here on how to limit the repair bill on your car.
Best of luck Thumb
_________________
997.2 Carrera 2S GT Silver/Cocoa.
 
  
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cardy
Newbie


Joined: 12 Nov 2019
Posts: 12



PostPosted: Tue Nov 12, 2019 6:34 pm    Post subject: Reply with quote

thanks

I wanted a Targa. I wanted a green one. Preferably a 4. Most preferably a 4s.

The last owner had it wrapped in orange

I've enjoyed it for 3 summers

Haven't had it over 220kmh

Last edited by cardy on Sat Nov 16, 2019 3:02 am; edited 1 time in total
 



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deMort
Dijon


Joined: 21 Mar 2015
Posts: 7573
Location: Brighton


PostPosted: Tue Nov 12, 2019 7:17 pm    Post subject: Reply with quote

I'm not sure what mechatronics is ? PDK control unit perhaps ?

Again by tuned do you mean it's not standard ?

Fault code is below .. it would appear thats its either the PDK gearbox , wiring or the control unit ..

It would seem to work on a PWM signal .. so a switched voltage between 2 volts and 10 volts basically .. a wiring check is needed and if possible a scope attached to the wire from shift rod three sensor to see what you have ..

If 0 or 12 volts then its either a short to earth or a short to battery positive .

Not an easy fault to track down i feel and i am concerned due to the lack of parts to repair a PDK box then a new one might be required Sad

A wiring short circuit is what i'm hoping though .
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My Daughter's Crowdfunding has hit the target .

Thank you all so Very much .

She's not going until july 2020 though .



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cardy
Newbie


Joined: 12 Nov 2019
Posts: 12



PostPosted: Tue Nov 12, 2019 7:40 pm    Post subject: Reply with quote

tuned mean Porsche dealers "re-calibrated" the PDK

thanks for the detailed reply above

I am not sure why my mechanic went mechatronic route, don't see this much across the forums
 
  
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Robertb
Dijon


Joined: 01 Sep 2003
Posts: 7307
Location: South Oxfordshire

2002 Porsche 996 Carrera 4S

PostPosted: Tue Nov 12, 2019 7:51 pm    Post subject: Reply with quote

I know the mechatronic is the root of lots of trouble with the VW/Audi DSG box, but have not heard of the PDK having similar issues.

The symptom is a juddering at low speeds, like reversing.
_________________
"911- the guilt-free supercar"

Current: 2003 C4S Coupe, seal/black

Ex: '02 C4S Coupe, '96 993 Targa, '88 Carrera Sport Coupe
 
  
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deMort
Dijon


Joined: 21 Mar 2015
Posts: 7573
Location: Brighton


PostPosted: Tue Nov 12, 2019 7:58 pm    Post subject: Reply with quote

I'm afraid i still don't know what the Met thingy is ... but a calibration was and is a standard thing .. it's merely setting the parameters in the box for gear changes .. there was also a lot of software updates for these .

None of this is your problem though .. you have a fault where by the control unit is getting a corrupt signal from this sensor and that's what the problem is .

Wiring .. or mechanical .. that's what needs to be found out .
_________________
.

My Daughter's Crowdfunding has hit the target .

Thank you all so Very much .

She's not going until july 2020 though .



Mechanic

7pm - 9pm

Now At An Indy.
 
  
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arthouse
Trainee


Joined: 20 Nov 2018
Posts: 56
Location: Suffolk


PostPosted: Tue Nov 12, 2019 8:13 pm    Post subject: Reply with quote

cardy wrote:
tuned mean Porsche dealers "re-calibrated" the PDK

thanks for the detailed reply above

I am not sure why my mechanic went mechatronic route, don't see this much across the forums


The mechatronic unit in early/the first VW DSG gearboxes was a common fault, it was quite an expensive fix until more recent years. If the PDK is anything like the DSG then the reason for re-calibration is due to clutch plate wear, and garages often re-calibrate them on change of ownership as the mechatronic gets used to your driving style, and is supposed to adapt accordingly, to be honest i never noticed any difference in either of my DSG boxes after re-calibration, but that could explain why yours has been re-calibrated 3 times.
Maybe your mechanic had experience with early DSG mechatronic failures and thought it was the fault with your PDK.
_________________
997.2 C2 Manual, Carrara White, PCCB, SC PASM w/LSD, PSE, SSK, Chrono, Carbon bits and Yellow Belts

Last edited by arthouse on Tue Nov 12, 2019 8:14 pm; edited 1 time in total
 
  
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cardy
Newbie


Joined: 12 Nov 2019
Posts: 12



PostPosted: Tue Nov 12, 2019 8:13 pm    Post subject: Reply with quote

is the mechatronic the control unit?

I have seen a rare post were a 997.2 needed a mechatronic but for diff issues (juddering as you say)

I did not have any shuddering prior to the transmission emergency run message

PRIOR issues were just when the car wasn't fully warmed there could be some slight pausing issues in first gear and reverse

My feeling is it can't be mechanical, the car was driving fine before I parked it and the warning came on. The gear select #'s were flashing back and forth and it wouldn't let me select a gear or drive the car.

I'd driven it all week and just come back from the cottage, a 90 min ride
First time seeing this warning
 
  
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cardy
Newbie


Joined: 12 Nov 2019
Posts: 12



PostPosted: Tue Nov 12, 2019 9:08 pm    Post subject: Reply with quote

here's the malachite for the poster above
I prefer the green
Most like the orange it seems
 



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cardy
Newbie


Joined: 12 Nov 2019
Posts: 12



PostPosted: Tue Nov 12, 2019 9:12 pm    Post subject: Reply with quote

I am just off the phone with a specialized Porsche mechanic about 1 hour away who owns four 911's

He tells me he can fix it 99% without a new PDK.

From the info sent, it is almost a lock it is electronic / voltage / sensor and between him and his transmission specialist he thinks we will be fine

If it is the PDK mechanically he has 4 or 5 units laying around he can use to repair that with as well

I may have just gotten extremely lucky
 
  
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wildej
Spa-Francorchamps


Joined: 06 Nov 2014
Posts: 251
Location: Wirral


PostPosted: Tue Nov 12, 2019 9:34 pm    Post subject: Reply with quote

Hi I had the transmission emergency run message appear on my old 4S with pdk.
The pdk box used to go into limp mode and it was put down to a bad coil pack.
Had the coil packs replaced and the problem was solved.
Not sure if this similar issue to yours but thought I would mention it.
Good luck getting it resolved.
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Previous
991.1 C4S
997.1 Turbo
997.2 C4S
997.2 Carrera
 
  
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cardy
Newbie


Joined: 12 Nov 2019
Posts: 12



PostPosted: Tue Nov 12, 2019 9:38 pm    Post subject: Reply with quote

thanks for the feedback and help so far

I am a newbie on Porsche boards, cut my teeth on the golf boards

It seems the wife's manual 996 has been a lot less problematic and I was worried that would be the difficult one with the IMS history
 
  
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Robertb
Dijon


Joined: 01 Sep 2003
Posts: 7307
Location: South Oxfordshire

2002 Porsche 996 Carrera 4S

PostPosted: Tue Nov 12, 2019 9:51 pm    Post subject: Reply with quote

Fingers crossed... seems DeMort is on the right lines as always...

Ps I love the green!
_________________
"911- the guilt-free supercar"

Current: 2003 C4S Coupe, seal/black

Ex: '02 C4S Coupe, '96 993 Targa, '88 Carrera Sport Coupe
 
  
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chunkymonkey1982
Newbie


Joined: 19 Jun 2017
Posts: 23



PostPosted: Tue Nov 12, 2019 9:59 pm    Post subject: Reply with quote

Still worth checking the battery, there could be a reason why the battery isn’t being charged properly. Also the Canada cold could make things worse. Maybe try starting the car with a jump start pack connected in parallel.
 
  
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cardy
Newbie


Joined: 12 Nov 2019
Posts: 12



PostPosted: Thu Nov 14, 2019 2:31 pm    Post subject: Reply with quote

The initial faults per the 1st shop

U0418 - CAN fault, brake
P0562 - system low voltage (should be noted this fault was stored in April - when the battery was replaced)
 
  
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cardy
Newbie


Joined: 12 Nov 2019
Posts: 12



PostPosted: Thu Nov 14, 2019 2:35 pm    Post subject: Reply with quote

Comments follow from first mechanic to owner of 2nd shop where car is heading:

2009 997 4S PDK here with a P1733 (shift rod 3 displacement sensor) issue. When the vehicle was first dropped off, when put into D the selection screen would cycle between 1/2 gear repeatedly, with the above fault stored. I monitored measured values and found all ranges to be within spec (including the temperature sensor), with the exception of the shift rod displacement sensors, which did not move when put into gear.
I unplugged the mechatronic and sensor connectors on the PDK to check for oil ingress, no oil was found in connector housings.
At this point, fluid was drained and pan removed to inspect the mechatronic wiring harness, no damage found. PDK control module was disconnected inside the vehicle and tested wiring from the PDK to the module. All wiring found to be ok (within 0.2 Ohms). Lack of wiring faults, shift rod not moving, as well as client's concern of late engagement occasionally led to a Mechatronic unit replacement. Following replacement, coding, fluid fill and bleeding, the gear selector no longer cycles between 1/2 gear, but the 1733 fault returned after being put into D.

If there is any insight you may have it would be greatly appreciated.
This issue unfortunately doesn't seem like it will be as simple as a wiring repair or new mech unit.
 
  
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deMort
Dijon


Joined: 21 Mar 2015
Posts: 7573
Location: Brighton


PostPosted: Thu Nov 14, 2019 7:36 pm    Post subject: Reply with quote

If the wiring has been checked for any short circuits and found to be ok .. if the control unit has been replaced and still faulty then we are only really left with the sensor as per the fault code .

For me i would have scoped the signal from this sensor at the beginning and then gone from there .

shift rod 3 displacement sensor seems atm to be the fault and if this can be replaced on its own then it's not a new box required .

I'm afraid here and we have very few parts available to fix issues on these hence its often a new box required .
_________________
.

My Daughter's Crowdfunding has hit the target .

Thank you all so Very much .

She's not going until july 2020 though .



Mechanic

7pm - 9pm

Now At An Indy.
 
  
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cardy
Newbie


Joined: 12 Nov 2019
Posts: 12



PostPosted: Fri Nov 15, 2019 8:37 pm    Post subject: Reply with quote

the mechatronic is parts 7, 11 and 14, Star Wars shaping
 



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cardy
Newbie


Joined: 12 Nov 2019
Posts: 12



PostPosted: Thu Nov 28, 2019 7:43 pm    Post subject: Reply with quote

deMort wrote:
If the wiring has been checked for any short circuits and found to be ok .. if the control unit has been replaced and still faulty then we are only really left with the sensor as per the fault code .

For me i would have scoped the signal from this sensor at the beginning and then gone from there .

shift rod 3 displacement sensor seems atm to be the fault and if this can be replaced on its own then it's not a new box required .

I'm afraid here and we have very few parts available to fix issues on these hence its often a new box required .


How do you scope the signal from this sensor ? Isn't the sensor inside the sealed PDK unit? Part #?

There is a guy locally that will fix this for half the price of a new unit ... so he must me able to open the tranny, replace what is likely an inexpensive part (rare to find I guess) and put it back together.

So if he can get the part they must be out there somewhere? At that point it become do you get a new one with a full 2 year warranty or repair and flip the car?

The crazy thing is that Porsche requires the old tranny back before sending a new one

I have sent a message to head office - likely falling on deaf ears - about how asinine it is for a car of this calibre to have such an expensive fix when it is only 10 years old . .The fix is 45% of the value of the car !
 
  
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