Bobcat TL3570 12-21 Error Code
12-21 Error Code
Auxiliary Pwm Switch Out Of Range High is the main cause of 12-21 error.This code can lead to engine failure if the issue is not addressed. Working with a maintenance professional is crucial in order to review and address signs of overheating on your vehicle. In the long term, this can prevent failure at a critical time.
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.