DTC codes / P27xx · Transmission / P2782
P2782 indicates that the transmission control module has detected an intermittent or erratic signal from the downshift switch circuit, which is typically part of the manual shift gate or steering wheel paddle system. The computer expects a clean, consistent voltage transition when you request a downshift, but instead sees a signal that flickers, drops out, or changes too rapidly for a valid command.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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