Does a Bad Transmission Throw a Code

Yes, a bad transmission can throw a code, and in most modern vehicles, it often does.When something goes wrong in the transmission—whether it’s slipping, overheating, or a sensor malfunction—the vehicle’s onboard computer (ECU or TCM) detects it and stores a diagnostic trouble code (DTC). What Kind of Codes Can a Bad Transmission Trigger? Transmission-related issues…