Code p1780, gearbox fault?

2002 JAGUAR X-TYPE
125,707 MILES • V6 • 4WD • AUTOMATIC
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MELANCON AUTOMOTIVE
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I recently got a gearbox fault on the dash, and I have an Autel scanner, so I scanned vehicle and I'm getting a p1780 code. I just changed the whole shifter out and still getting code. what could it be?
Nov 30, 2022 at 1:21 PM
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STRAILER
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Code P1780 Transmission Control Switch (TCS) not cycled during the self-test. So, there is a g37 ground wire that needs to be checked which is at the lower left side of the dash on the car cross beam. Also, please check the fuse # f27, f5 in the under-hood fuse panel and fuse # f67 and f80 in the interior fuse panel left front of the passenger's compartment. Here is a guide to help you. Also, I have included the transmission wiring diagrams as well so you can see how the system works.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

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Dec 1, 2022 at 4:09 PM