There is a problem with the electrical circuit of the torque converter clutch solenoid. Which means the control module (PCM/TCM) cannot correctly Manage the clutch, which suggests the torque converter clutch is possibly within a permanent/intermittent locked condition, or open condition or slipping. In case you discover the transmission slipping, https://torque-converter-clutch09630.blogolenta.com/31205515/about-torque-converter-clutch