Bobcat S300 M1821 Error Code
M1821 Error Code
Frame Leveling pot Out of range high is the main cause of M1821 error.M1821 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 S300 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.