TOOL OVERLOAD
Ryobi · Ryobi RY401018 40V 20 in. Brushless Push Mower
The tool has activated overcurrent protection and shut down. On tools with an LED indicator, a blinking red LED may be visible. This occurs when the motor draws more current than the controller can safely deliver — typically because the motor is stalled or encountering extreme resistance. Common triggers by tool type: Chainsaw — chain pinched in a cut, chain too tight, chain brake accidentally engaged. Mower — blade hitting a stump, rock, or extremely thick/wet grass. Trimmer — trimmer line jammed or caught on a solid object. Blower — foreign object lodged in the impeller. Release the trigger and wait 10-15 seconds for the controller to reset. Remove the obstruction or cause of the stall before restarting. If the tool immediately shuts down again with no visible obstruction, check that the battery is adequately charged (a low battery combined with a heavy load can trigger overcurrent). If the problem persists with a fully charged battery and no load, the motor or controller may have a fault requiring warranty service.
Error TOOL OVERLOAD on the Ryobi Ryobi RY401018 40V 20 in. Brushless Push Mower means: Tool Overload Protection — Motor Overcurrent. The top-ranked community fix is “Test and Replace Faulty Motor or Controller” (hard difficulty, ~90 min, DIY cost: $20-$50). 2 community-ranked fixes available below.
Published February 2026 · 2 fixes · push mower
Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.
While many push mower repairs can be done safely at home, consider hiring a qualified technician if:
Average professional repair cost for this issue: $180-$300.
Battery Fault — All 4 LEDs Blinking
Battery Too Cold to Operate or Charge
Battery Fully Depleted — No LEDs Lit
Battery Over-Temperature — Tool Shuts Down
Blade Stops Spinning in Thick Grass
Charger Alternating Red/Green — Defective Battery
Abnormal Vibration During Operation
Deck Height Adjustment Stuck or Difficult
The Ryobi Ryobi RY401018 40V 20 in. Brushless Push Mower has 8 other known error codes:
Error code TOOL OVERLOAD also appears on 4 other Ryobi models:
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