Bobcat S590 M4621 Error Code
M4621 Error Code
5V Sensor Supply Out of Range High is the main cause of M4621 error.A significant number of consequences can be suffered due to an overheating engine with code M4621. The problem might be a blown gasket or something related to the fuel tank.
Tip For S590 Model
When a WARNING condition exists; the associated icon
light is ON and the alarm sounds 3 beeps. If this
condition is allowed to continue, there may be damage to
the engine or hydraulic systems.
When a SHUTDOWN condition exists; the associated
icon light is ON and the alarm sounds continuously. The
monitoring system will automatically stop the engine in
15 seconds. The engine can be restarted to move or
relocate the excavator.
The SHUTDOWN feature is associated with the following
icons:
General Warning
Engine Malfunction
Engine Coolant Temperature