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Bobcat T590 U121A Error Code

U121A Fault Code Meaning :

CAN Communications Fault

U121A Error Code

CAN Communications Fault is the main cause of U121A error.A significant number of consequences can be suffered due to an overheating engine with code U121A. The problem might be a blown gasket or something related to the fuel tank.

Bobcat T590 Photo

Tip For T590 Model

The overload warning device (if equipped) senses hydraulic pressure in the boom lift circuit. When the hydraulic pressure in the boom lift circuit reaches a predetermined pressure setting, a buzzer will sound that indicates an overload condition.

If the buzzer sounds, immediately move the arm closer to the excavator and lower the boom. Reduce the size of the load before attempting to re-lift the load.

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