Bobcat 325 12-21 Error Code
12-21 Error Code
Auxiliary Pwm Switch Out Of Range High is the main cause of 12-21 error.12-21 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 325 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.