Bobcat T650 P0421 Error Code
P0421 Error Code
DOC Efficiency Fault (During Regen) is the main cause of P0421 error.A significant number of consequences can be suffered due to an overheating engine with code P0421. The problem might be a blown gasket or something related to the fuel tank.
Tip For T650 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.