A8 / S8 (D2 Platform) Discussion Discussion forum for the D2 Audi A8 and S8 produced from 1994-2002

problem with the TFT Sensor

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Old Aug 22, 2011 | 06:16 AM
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Default problem with the TFT Sensor

I have an Audi S8 1998 model with the 5 Speed automatic transmission the car runs prefect but recently i have noticed that when the car is at normal temperature or after driving for about an hour it begins to act strange . it doesn't shift from second to third on drive unless you select the tip mode and you select the third gear . i have hooked it up to the scanner and it gave me the following : transmission fluid temperature sensor .
Can anyone please advise me how to replace it or how can i fix this problem !
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Old Aug 22, 2011 | 06:03 PM
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It is in the trans wiring harness inside the trans behind the pan.

http://audipages.com/tozo/tn_trans%20temp%20sensor.JPG
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Old Aug 23, 2011 | 12:50 AM
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Thanx for your reply and help i just want to know what do you mean by pan ? the oil filter ? or the valve body inside the transmission ?
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Old Aug 23, 2011 | 04:45 AM
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Originally Posted by KEVOZS8
Thanx for your reply and help i just want to know what do you mean by pan ? the oil filter ? or the valve body inside the transmission ?
Both are. Filter attached to valve body.
Pics in this tutorial:

http://www.audipages.com/Tech_Articl...servicing.html
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Old Dec 1, 2011 | 12:52 AM
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Hi Again , Thank you for your help but i cant find it thru the websites such part ( new Wiring harness of the transmission (5HP24A)) if you can give me a link i will be very glad and appreciated .
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Old Dec 1, 2011 | 07:25 AM
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Originally Posted by KEVOZS8
Hi Again , Thank you for your help but i cant find it thru the websites such part ( new Wiring harness of the transmission (5HP24A)) if you can give me a link i will be very glad and appreciated .
The part # for your car is: 01V 971 661 C

The temp sensor is integrated into the wiring harness.

U.S. suppliers price it from $200-$260 USD.

Cheapest I found was at:
http://genuineaudiparts.com/partloca...?siteid=214407
...but don't know if they ship internationally.

With the part # as reference, you can likely find it locally...where ever you may be.
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Old Feb 21, 2012 | 11:01 PM
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I got the part last week but i want to know is it from the Sensor faulty itself or my trans oil is overheating ?do i need to flash the radiator hoses first then replace the harness ?
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Old Feb 22, 2012 | 05:10 AM
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Originally Posted by KEVOZS8
I got the part last week but i want to know is it from the Sensor faulty itself or my trans oil is overheating ?do i need to flash the radiator hoses first then replace the harness ?
What was the original code you got? ...exact number.
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Old Feb 22, 2012 | 07:38 AM
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P0711 Transmission Fluid Temperature Sensor Circuit Range/Performance
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Old Feb 22, 2012 | 02:08 PM
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Originally Posted by KEVOZS8
P0711 Transmission Fluid Temperature Sensor Circuit Range/Performance
High ATF temp should not trip that code.

It indicates an open circuit or short circuit in the harness...or a faulty sensor.

If you haven't already, I would check the harness connection on the outside of the trans first...bad connection, oil soaked, corrosion, etc.
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