More recent different types of automatic transmission, similar to the semi-guide gearbox and CVT use other methods of electrical power shipping and delivery, and don't contain torque converters. The PCM/TCM will not likely set a DTC Except there is a issue Along with the electrical circuit controlling the torque converter https://torqueconverterclutch84703.bloggerswise.com/41350849/how-much-you-need-to-expect-you-ll-pay-for-a-good-torque-converter-clutch