Bobcat 773 M4903 Error Code
M4903 Error Code
Rear Light Relay Error Off is the main cause of M4903 error.This code can lead to engine failure if the issue is not addressed. Working with a maintenance professional is crucial in order to review and address signs of overheating on your vehicle. In the long term, this can prevent failure at a critical time.
Tip For 773 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:
Engine Coolant Temperature