DTC codes / Jaguar codes / P1730
P1730 on a Jaguar means the transmission control module (TCM) has detected an electrical or hydraulic fault specifically affecting the 2-3 and 3-5 gear shifts within the gearbox control system. The TCM monitors solenoid response and clutch timing during these shifts, and when the expected gear engagement does not occur within its programmed window, it stores this code and typically illuminates the warning light.
Guidance is general and written for Jaguar vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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