Bobcat S510 D8121 Error Code
D8121 Error Code
LS Pump Pressure Out of Range High is the main cause of D8121 error.A significant number of consequences can be suffered due to an overheating engine with code D8121. The problem might be a blown gasket or something related to the fuel tank.
Tip For S510 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.