A Fix for P1710 transmission fault code - SB9T.com
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Old 11-30-2018, 02:19 PM   #1 (permalink)
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Default A Fix for P1710 transmission fault code

I was having hard random shifts and P1710 fault code with flashing A/T light, ABS and traction control with a 2008 2.0lt GT Legacy.
Research suggested this is a common problem with the later model BP transmissions. Subaru's fix is a new Valve Body, Big $$$$.
P1710 is "Turbine Speed 2 sensor" being a Hall effect sensor that detects the speed of the input shaft. The sensor is not available for sale by itself.

I bought a generic 1/2" Hall effect sensor.
https://www.amazon.com/NJK-5002C-Eff...1DQBTX8KXFWPMK

I mounted this sensor on the valve body in exactly the same position as the original sensor, connected the Grd, Pwr and signal wires to the harness

Nearly 4 months on the car is still driving sweet. No hard shifts No fault codes

The following link is to photos before and after
Attached Images
File Type: jpg IMG_0473.JPG (122.0 KB, 41 views)
File Type: png IMG_0479.PNG (344.6 KB, 27 views)
File Type: jpg IMG_0474.JPG (116.3 KB, 34 views)
File Type: jpg IMG_0475.JPG (125.1 KB, 38 views)
File Type: jpg hall effect.jpg (13.3 KB, 32 views)

Last edited by tony64peter; 12-01-2018 at 06:34 PM.
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Old 11-30-2018, 03:15 PM   #2 (permalink)
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Please fix the photo link.
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Old 11-30-2018, 03:28 PM   #3 (permalink)
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[IMG][/IMG]

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Old 11-30-2018, 04:07 PM   #4 (permalink)
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OK I found your post on the Outback board. This is a very clever idea. The solution as presented seems to apply to 2008 and later models of Tribeca (second version of 5EAT with TCU inside), but hopefully, a similar fix would apply to the early version as well.

Last edited by avk; 12-01-2018 at 07:09 PM.
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Old 11-30-2018, 05:16 PM   #5 (permalink)
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I think the earlier version has two sensors located on top of valve body so not sure if this remedy would work. Most Hall effect sensors work the same way and use similar voltages. The limiting issue in this case is the height of the sensor above the valve body in regard to mounting and wire harness. Most Hall effect sensors could do the job but are unable to be mounted in this confined space. Most externally used Hall effect sensors utilise electrical connecting plugs which is not ideal in this case, its better to be hard wired.

My Trans had the TCU under the dash panel. Trans is a TG5D7CBDAA or Jatco JR507E

Last edited by tony64peter; 12-03-2018 at 09:18 AM.
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Old 12-01-2018, 11:15 AM   #6 (permalink)
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Can you please re upload pictures or send link to LGT?

I got it
https://www.subaruoutback.org/forums...ifts-5eat.html

Tony any numbers on OE sensor?

Last edited by lutek34; 12-01-2018 at 12:14 PM.
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Old 12-01-2018, 06:20 PM   #7 (permalink)
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https://www.subaruoutback.org/forums...ifts-5eat.html

Sorry deleted numbers on old sensor but noted on Ebay on a modified valve body they had changed. I assume this was the problem all along and that is why Subaru has modified sensors on the newer valve bodies.

Check out the link for some generic part numbers. Basically a 1/2" Hall effect sensor about 5/8"
long as it has to be mounted exactly the same height as the original.

Regards T
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Old 12-02-2018, 10:53 PM   #8 (permalink)
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Here is a link to the manufacturer of the turbine speed 2 sensor for 5EAT transmissions.

131958 - LINESOON
The Linesoon part number 131958
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File Type: jpg 131958.jpg (130.4 KB, 1 views)
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Old 12-02-2018, 11:14 PM   #9 (permalink)
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Minimum order from them is $5000
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Old 12-02-2018, 11:18 PM   #10 (permalink)
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Ouch!!! Stick with the generic then way cheaper. Thanks
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Old 02-07-2019, 09:27 PM   #11 (permalink)
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A link to the sale of these sensors
https://www.trademe.co.nz/motors/car...1943885886.htm
new stratos likes this.
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Old 04-02-2019, 04:02 PM   #12 (permalink)
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When you solder in the new sensor, what precautions do you need to take as far as insulation? Did you use heatshrink? Will the solder joints be in transmission fluid? Did the repair require removing the valve body? Thanks.
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Old 04-25-2019, 10:23 AM   #13 (permalink)
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Hi Yes I soldered then heat shrinked each wire. No problems to date. Now selling the genuine sensors. Contact via gmail. Regards
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