Typically, on hydraulically controlled transmissions, the Powertrain Control Module (PCM) will not set a Diagnostic Trouble Code (DTC) except in the case of an open circuit or a shorted solenoid for the TCC circuit.

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Hydraulically controlled transmissions rely on fluid pressure for operation, and the PCM typically only sets a DTC for electrical issues like open circuits or shorted solenoids in the Torque Converter Clutch (TCC) circuit.

Typically, on Hydraulically Controlled Transmissions, the Powertrain Control Module (PCM)