Cove Dishwasher Error Code 050119

Error code 050119 on a Cove dishwasher indicates a fatal IPM (Intelligent Power Module) Ta open or short error within the wash pump drive system. The IPM is a critical component inside the MCM (Motor Control Module) assembly that regulates power delivery to the wash pump motor. The Ta designation refers to the ambient temperature sensor or a specific thermal protection circuit within the IPM. An open condition means the circuit is broken and no signal is being received, while a short condition means the circuit has collapsed to a near-zero resistance state. Either condition prevents the IPM from safely operating, and the system flags it as fatal because the wash pump cannot run reliably under these conditions.

The MCM assembly houses the drive electronics responsible for controlling motor speed and torque during the wash cycle. When the IPM detects an open or short fault, it shuts down to prevent damage to the motor windings and associated power electronics. This fault is classified as fatal, meaning the dishwasher will not attempt to restart the wash pump until the fault is cleared. The root cause is almost always internal failure of the MCM assembly itself, whether from a failed IPM chip, damaged internal wiring, or degraded thermal interface components.

Because this fault is internal to the MCM, the prescribed first diagnostic step is direct replacement of the MCM assembly rather than attempting to repair individual sub-components. Field repair of IPM circuits is not practical, and the assembly must be swapped as a unit. Before replacing, verify the wiring harness connectors to the MCM are fully seated and undamaged, as a loose connection can sometimes mimic an open circuit fault.