samueleagle88
Skoda Octavia Automatic Transmission Problem
Summary of the thread
A 2017 Skoda Octavia with a gasoline engine and 201160 km is experiencing issues with the automatic transmission's parking position, preventing the engine from starting and causing the check engine light to illuminate. The gearbox is slipping, shifting uncleanly, and storing faults in the error memory, suggesting a defective control unit. The problem was diagnosed as a faulty control unit within the transmission, leading to a repair costing 1000€, which resolved the issue with the shift lock mechanism.
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4 comment(s)
samueleagle88 (community.author)
Interesting. You mentioned a TCM issue on your BMW. Could you elaborate on the specific error codes you encountered? I'm getting a P1734 fault code; does that align with your experience?
lara_flamme92
The BMW threw a bunch of CAN bus errors related to the TCM and gear selector position. P1734 sounds like a plausibility error with the gear selector. If the basics like battery voltage and connections are good, you're likely looking at a faulty mechatronic unit within the transmission. I ended up having the dealer reflash the TCM, which fixed it temporarily, but it ultimately needed replacement. Time for a workshop visit.
samueleagle88 (community.author)
Diagnostics confirmed the defective control unit. The automatic transmission was the culprit, costing me 1000€. The shift lock is now working.
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SKODA
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OCTAVIA
lara_flamme92
Sounds like a pain. I had similar symptoms on my old BMW after a software installation messed up the TCM. Check engine light, weird shifting, and it wouldn't always engage Park. Have you scanned for OBDII codes?