Bobcat 553 D4128 Error Code

D4128 Fault Code Meaning :

FNR multiple inputs active

D4128 Error Code

FNR multiple inputs active is the main cause of D4128 error.A significant number of consequences can be suffered due to an overheating engine with code D4128. The problem might be a blown gasket or something related to the fuel tank.

Tip For 553 Model

There is a control lock sensor in the left console which deactivates the hydraulic control levers (joysticks) and the traction drive system when the control console is raised. The console must be in the locked down position for the hydraulic control levers (joysticks) and traction system to operate.

NOTE: If the control lock sensor does not deactivate the control levers and traction system when console is raised, see your Bobcat 553 dealer for service.