Bobcat TL3570 P0421 Error Code
P0421 Error Code
DOC Efficiency Fault (During Regen) is the main cause of P0421 error.P0421 code needs proper lubrication of your transmission's moving parts, it's important to always drive with the right amount of clean fluid. It's good practice to periodically scan over the ground where your truck has been parked and check for signs of fluid leaks.
Tip For TL3570 Model
It is recommended in cold weather to cycle the glow plugs twice before attempting to start the engine. This will allow for additional heating time for cold weather starting.