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Tons of fail codes - 997.1 tiptronic

Sondergard

Member
Joined
24 Oct 2019
Messages
21
Hi

Have anyone tried to get following fail codes at same time?

8981 Can-Bus connection to combi instrument (dashboard I believe)
9730 Power supply for magnet valve
8707 Sensor N3
9227 Can-bus/diagnostic cable from ECU

Its translated from Danish so it might not be correct translated (Sorry)

The codes are now there after changing speedsensor 0261 210 248 which was failing before. It all started with one day when the car went into emergency run in the gearbox. I stopped the car and it disapeared again.
After a couple of days with situations where the car went into emergency run again. Then it suddenly got stuck in "emergency run " mode.

i took it to the nearest garage in second gear (not a Porsche dealer)
I had a read out that the sensor was failing.
So we changed the sensors and got all these failures.

Any ideas about what to do.
The car is currently at a non Porsche specialist so Id like to help him as much as possible.

Thanks in advance from DK

Bet regards Ricky Sondergard
 
Is this car a cab ?

Have you jump started the car recently ?

Why did you change the crank position sensor .. was there a starting fault ? or a breakdown with the car not starting when hot ?

The codes are mainly about communication faults between control units .. water ingress .. rear carpets damp is one thing to check ..

What actual sensors have been replaced .. gearbox speed sensors ?

A few questions and i can look into it further tomorrow .. im afraid im only here till 9pm .. 7-9pm to be correct and i think i may have to work hard on this fault :)
 
deMort said:
Is this car a cab ?

Have you jump started the car recently ?

Why did you change the crank position sensor .. was there a starting fault ? or a breakdown with the car not starting when hot ?

The codes are mainly about communication faults between control units .. water ingress .. rear carpets damp is one thing to check ..

What actual sensors have been replaced .. gearbox speed sensors ?

A few questions and i can look into it further tomorrow .. im afraid im only here till 9pm .. 7-9pm to be correct and i think i may have to work hard on this fault :)

No its not been jump started.
I took off the plus on the battery to see if I could clear the "emergency run mode" thats all.
I had it at a Porsche dealer and he said - change the speedsensor as it is reporting to have faults
It was reading:
P0715 Input/turbine Speed Sensor "A" circuit (Signal implausible)

Rearcarpets must be checked - these havent been checked
 
Ok im afraid i have to log off now but i will study the codes tomorrow night ..


An unusual fault i feel .. sorry i can't answer now ... i have limited time on here .. sigh .
 
deMort said:
Ok im afraid i have to log off now but i will study the codes tomorrow night ..


An unusual fault i feel .. sorry i can't answer now ... i have limited time on here .. sigh .

No worries - thanks a lot for your contribution so far..

It sounds a bit like water in connectors or something

Note: We only changed that one sensor (crank sensor)
 
Ok i've done some searching and i'm afraid none of the codes you have listed seem to be correct for the car , there should be a P code .. ie P0715 .. so i can't help with them .. but ..

Your description of the original problem is a tiptronic fault ..

I'm giving advise on what the Porsche dealer said and that code ..

P0715 Input/turbine Speed Sensor "A" circuit (Signal implausible)

This is a speed sensor inside the gearbox .. Not the crank angle sensor that the garage has replaced .

The gearbox monitors the input and output shaft speeds .. sensors N2 and N3 .. it is seeing a fault with N3 hence the original fault code P0715.

I have found info on that and it's in the images below... you need to test the items in the images .
 

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deMort said:
Ok i've done some searching and i'm afraid none of the codes you have listed seem to be correct for the car , there should be a P code .. ie P0715 .. so i can't help with them .. but ..

Your description of the original problem is a tiptronic fault ..

I'm giving advise on what the Porsche dealer said and that code ..

P0715 Input/turbine Speed Sensor "A" circuit (Signal implausible)

This is a speed sensor inside the gearbox .. Not the crank angle sensor that the garage has replaced .

The gearbox monitors the input and output shaft speeds .. sensors N2 and N3 .. it is seeing a fault with N3 hence the original fault code P0715.

I have found info on that and it's in the images below... you need to test the items in the images .

Hi Demort
This is really great info.
Thanks a lot🙌

I purchased the speedsensor from info I was given by searching on the web.
That sensor which are related to gearbox - do you know the part no. For this?
And do you read the same as me (complete conductor plate should be changed?)
Br
Ricky
 
The crank sensor basically has nothing to do with your fault .. the conductor plate has been mentioned here several times for faults like this .. people have replaced it and fixed N2 / N3 faults .

I don't know part numbers im afraid .. i just fix these cars :)

It still needs checking though .. you have a control unit and wiring that can cause this so not just a conductor plate .
 
deMort said:
The crank sensor basically has nothing to do with your fault .. the conductor plate has been mentioned here several times for faults like this .. people have replaced it and fixed N2 / N3 faults .

I don't know part numbers im afraid .. i just fix these cars :)

It still needs checking though .. you have a control unit and wiring that can cause this so not just a conductor plate .

Yes thats right - and since there are that many CAN-bus failures. Then it could be related to wiring for sure.
Again thanks - its a great help.
 

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Sondergard said:
deMort said:
The crank sensor basically has nothing to do with your fault .. the conductor plate has been mentioned here several times for faults like this .. people have replaced it and fixed N2 / N3 faults .

I don't know part numbers im afraid .. i just fix these cars :)

It still needs checking though .. you have a control unit and wiring that can cause this so not just a conductor plate .

Yes thats right - and since there are that many CAN-bus failures. Then it could be related to wiring for sure.
Again thanks - its a great help.
 

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Do you have a coolant gauge error where it drops to zero and the red light flashes as well after about 15 mins of driving?

It's only that the codes listed would indicate the electronic valve on the gearbox that switches the oil cooler on and off would appear to be faulty .

Last set of fault codes and there is nothing i can find on them im afraid .. first image and they are P codes . i can help with them .

Can bus though is the communication from one control unit to another .. think of a ring with every control unit connected to it .. they all talk in binary code ..

Thats 011100110 escentialy for each signal .. a fault code indicates one of the control units is not seeing this message .

Atm i feel this is a seperate or a non existent fault .. your original fault is a tiptronic gearbox fault with a single sensor in the box having a signal that the control unit does not understand .

Work on that problem first .


Only the top fault code seems active .. the rest can be cleared and a road test will see if they come back .

Piwis is what i use so the garage has the correct equipment .
 
deMort said:
Do you have a coolant gauge error where it drops to zero and the red light flashes as well after about 15 mins of driving?

It's only that the codes listed would indicate the electronic valve on the gearbox that switches the oil cooler on and off would appear to be faulty .

Last set of fault codes and there is nothing i can find on them im afraid ..

Can bus though is the communication from one control unit to another .. think of a ring with every control unit connected to it .. they all talk in binary code ..

Thats 011100110 escentialy for each signal .. a fault code indicates one of the control units is not seeing this message .

Atm i feel this is a seperate or a non existent fault .. your original fault is a tiptronic gearbox fault with a single sensor in the box having a signal that the control unit does not understand .

Work on that problem first .


Only the top fault code seems active .. the rest can be cleared and a road test will see if they come back .

Piwis is what i use so the garage has the correct equipment .

Yes
I had the fault with coolant where it drops to zero.
It says the termostat is stuck in 'open" position.
Both temp sensor and termostat will be changed.

We will fix the gearbox sensor first
Thanks a lot🙌
 
It will more than likely be the electric valve shown in the picture thats faulty .. remove it and if you can blow through the pipes on it then it is faulty .

I changed one today for this exact problem.

left side of the gearbox.
 

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deMort said:
It will more than likely be the electric valve shown in the picture thats faulty .. remove it and if you can blow through the pipes on it then it is faulty .

I changed one today for this exact problem.

left side of the gearbox.

Thanks a lot
The garage will hopefully check it tomorrow as I've now sent them the information. :worship:
 

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