Bobcat A770 W4621 Error Code
W4621 Error Code
Vsensor 5V supply OOR High is the main cause of W4621 error.A significant number of consequences can be suffered due to an overheating engine with code W4621. The problem might be a blown gasket or something related to the fuel tank.
Tip For A770 Model
If the engine stops, the boom / bucket
(attachments) can be lowered to the ground
using hydraulic pressure in the accumulator.
The control console must be in the locked
down position, and the key switch in the ON
position.
Use the control lever to lower the boom.