Bobcat E20 W4902 Error Code
W4902 Error Code
Blue lights Output Short To Battery or Open Circuit is the main cause of W4902 error.Particularly in colder temperatures, starter failure seems to be a problem that happens more and more. In order to determine future performance, during the beginning of the winter season, the starter mechanism should be reviewed. Clear signs of problems with a starter will likely be noticed by the operator first.
Tip For E20 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.