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2014 V6, transmission in limp mode, stuck in 3rd gear, please help!


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Totally out of the blue while driving transmission got stuck on 3rd gear and wont shift. Check engine light is ON. It goes to reverse, park, drive (3rd!) with big bump...

 

I tried scanning it with durametric 6, got these from transmission module:

 

12750 / 31CE

Warning Indicator On
Test Completed This Monitoring Cycle
Test Failed Since Last Clear
Test Completed Since Last Clear
Pending DTC
Test Failed This Operation Cycle
Fault Active

 

Either durametric is not reading codes correctly or something else, but I cant find anything about this weird code...

 

My old universal Innova scanner reports P0973, which is also strange, as durametric not picking it up.

 

Very confused with all of this... I appreciate any help! Thank you!


 

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On 10/19/2020 at 11:45 AM, JFP in PA said:

Voltage to shift solenoid "A" is low.

I found an issue today, it's N89 solenoid. Resistance is only 5 ohms, should be in the range from 11 to 15.

Now big problem - where to find it? Cant find anything for 0C8 gearbox, the only similar is for Audi Q7 2012 off ebay hope it will fit

 

Picture of burnt solenoid (you can see burn marks on connector as well!):

 

 

PXL_20201024_182547670.jpg

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  • 1 month later...

Thank you, really appreciate your help!

 

Sorry for the late update but I fixed it. Transmission shifts perfectly now. 

 

At first I could not find this green solenoid anywhere. A black one which is right next to it is totally similar to shift solenoid from another AISIN transmissions used in VW / Jetta. I bought it and tried in place of green one. Bad decision! Transmission was out of limp mode but shifted really badly, with big delays going to each gear.

 

I finally found a whole assembled valvebody with all solenoids from broken transmission parting out, replaced both black and green from it to my transmission and everything is perfect! It shifts better then new.

For the laughs, here lessons learned:


- Transmission oil/filter change can be done in 30 minutes on jackstands on a driveway if you did it 3+ times lol

- Substitution of solenoids for another part is bad idea

- Most transmission filters that you can buy come from who knows where, despite proper markings. First new filter that just came in had a neck smaller (just tiny bit) then old one. And even with new rubber gasket wont seal properly with valvebody. Next, different source filter was perfect.

- Schwaben brake bleeder / fluid pump is worth it's price in gold. Just get it if you want to fill transmission in minutes with no mess.

 

Thank you so much everyone who helped, really appreciate it!!!

 

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