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Discussion Starter #1
Well, according to the code I am throwing (P1605), looks like I need a new TCM. I have some checks from the FSM to go through before I know for sure though. I figured I would look into the availability of the part as a worst case, and it seems like they dont exist so I'm wondering if it is normal to see them go out or not. Maybe I am not using the right key words....

So for a bit more background, the car is stuck in one gear. Selecting 1 or 2 on the selector doesnt work and there is no change with the O/D on/off switch. That light never turns on either, upon startup or otherwise.

Anyway, thanks in advance for the help!

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The P1605 fault code can be caused by any of the following:

* - Weak battery
* - Faulty Transmission Control Module (TCM)
* - Harness is open or shorted between TCM and Engine Control Module (ECM)
* - Poor circuit electrical connection between TCM and ECM
 

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Discussion Starter #4
Thanks for the feedback! I was able to find one after getting the original out of the car and run the PN. I had the key words off just enough to confuse the Ebay search on the mobile app but that didnt change anything so now to print off some pin out procedures before looking into transmission and shift actuators

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