Bobcat E55 D7539 Error Code
D7539 Error Code
Drive Left Swash Plate Sensor Out of Range High is the main cause of D7539 error.D7539 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 E55 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.