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Camille - Moderator
Hi, if the D light is flashing, this means there is a fault on the TCM (transmission control module) The car will need to be put on a diagnostic scanner, such has Honda HDS at a dealership or a good garage that has the specialist diagnostic equipment to scan this fault.Unfortunately universal fault code scanners will not read the TCM, only the Engine Control Module. Its impossible to know exactly what the fault is without retrieving this fault code as the faults range from a simple sensor, or bad connection, through to an internal mechanical fault, and due to the cost of parts and potential labor, it works out a lot cheaper to have it scanned at a good garage then take guesses as to whats causing the warning light.I hope this answers your question, if you have any further questions or would like me to expand on anything, please ask, thanks, Ross