E018
Greenworks
Blade Speed Sensor / Tachometer Fault
Robot mower shows E018 and will not start; may mention blade sensor or RPM error.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Damaged blade tach sensor, Dirty magnet or sensor on blade motor, Broken tach wiring, Main PCB tach input failure
How to Fix / Troubleshooting
Safety first: Turn OFF the main power switch and remove the battery if possible. Wear gloves before accessing the blade area.
- Access blade motor: Turn the mower upside down and locate the blade motor hub. Some models have a magnet or sensor ring for RPM detection.
- Clean sensor area: Remove grass and debris from around the motor hub and sensor. Ensure the magnet ring is intact and not loose.
- Inspect wiring: Look for damaged or loose wires leading from the motor to the main harness.
- Reassemble and test: Turn the mower upright, power ON, and start a short mow to see if E018 returns.
If the error persists, the blade motor assembly or tach sensor circuit on the main PCB may need replacement.
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Repair Difficulty
Hard
4/5
Required Part
Blade Motor with Tach Sensor
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