Hello. The key code here is likely the P1775 code, which means the solenoid for invoking torque converter clutch lockup is latched (or engaged). If this solenoid does not unlatch, or release the lockup clutch, the transmission controller gets "speed...
These are the following definitions for the codes you've received: P0864 - Transmission control module (TCM) communication circuit -range/performance problem P0070 (https://www.yourmechanic.com/article/p0070-obd-ii-trouble-code-ambient-air-temperature-sensor-circuit-by-jamahl-walker) - Ambient Air Temperature Sensor - (possibly shorted but most likely not related) P0734 - Gear 4 Incorrect...
