Error Code	Symptom	Fault Type	Guide
E1	Vacuum will not run; LED flashes E1 shortly after trigger is pulled	Overcurrent / Motor Overload Protection	View Details
E10	Vacuum does not start; E10 or continuous amber LED; works briefly then stops when shaken	Internal Connection / Harness Intermittent Fault	View Details
E2	Vacuum shuts down after a few seconds of use; E2 LED pattern or code shown on status indicator	Overtemperature / Thermal Cutout Activation	View Details
E3	Vacuum will not start; E3 indicator pattern when trigger is pulled with battery installed	Battery Pack Communication / Identification Fault	View Details
E4	Vacuum runs only at low speed or surges; E4 code or flashing pattern on speed/charge indicator	Motor Control / PWM Driver Fault	View Details
E5	Vacuum stops abruptly under light load; E5 indicator or beeping pattern; restarts after battery removal	Undervoltage / Battery Protection Trip	View Details
E6	Vacuum will not start; E6 or red LED solid when battery is installed and trigger pulled	Short Circuit / Overcurrent Protection	View Details
E7	LED indicator shows E7 or rapid red flashing; vacuum does not respond to trigger	Trigger / Switch Input Fault	View Details
E8	Vacuum runs but speed is erratic; E8 code or alternating red/amber LEDs	Motor Speed Feedback / Hall Sensor Fault	View Details
E9	Vacuum powers on but shuts off when switching to high power mode; E9 indicator shown	High-Load Mode Overcurrent / Mode Switch Fault	View Details
–	Battery becomes very hot to the touch after short use in the vacuum	Excessive Current Draw / Battery Overheating	View Details
–	Dust canister or tank is difficult to remove or reinstall	Canister Latch / Alignment Issue	View Details
–	Dust or debris escapes from around the lid or seams of the vacuum	Air Leak / Seal Failure	View Details
–	Fine dust blows out of the exhaust while vacuuming	Filter Bypass / Filter Damage	View Details
–	Hose collapses or kinks easily, reducing suction	Hose Structural Failure	View Details
–	Trigger feels loose, sticks, or does not return fully	Mechanical Trigger Failure	View Details
–	Vacuum body or handle becomes uncomfortably hot during normal use	Tool Overheating / Inadequate Cooling	View Details
–	Vacuum body shows cracks or damage after a drop; performance affected	Structural Housing Damage	View Details
–	Vacuum emits a burning smell or visible smoke during use	Electrical Overheating / Motor Burnout	View Details
–	Vacuum emits unusual clicking or sparking sounds from motor area	Commutator / Brush Arcing (for brushed motor variants)	View Details
–	Vacuum intermittently loses suction but motor speed remains constant	Cyclone / Internal Passage Blockage	View Details
–	Vacuum is very loud or makes a high-pitched whine compared to normal operation	Motor Bearing Wear / Fan Damage	View Details
–	Vacuum leaves debris behind on floor even though suction feels strong at hose	Nozzle / Floor Tool Inefficiency	View Details
–	Vacuum motor runs but suction is very weak	Reduced Airflow / Suction Loss	View Details
–	Vacuum produces a strong electrical or ozone-like smell but no visible smoke	Early Motor Insulation Breakdown / Overheating	View Details
–	Vacuum produces static shocks to the user during operation	Static Discharge Buildup	View Details
–	Vacuum runs but LED work light (if equipped) does not turn on	LED Work Light Circuit Failure	View Details
–	Vacuum runs but stops when hose is flexed or rotated	Hose-Related Electrical Interruption (for models with hose-mounted switches or sensors)	View Details
–	Vacuum runs but there is a whistling or hissing noise from joints or connections	Minor Air Leak at Joints	View Details
–	Vacuum runs only for a few seconds then stops; battery LEDs show low or flashing	Short Runtime / Battery Capacity Loss	View Details
–	Vacuum shuts off quickly when picking up liquids; restarts after a short time	Float Valve Activation / Liquid Level Protection	View Details
–	Vacuum shuts off when tilted or carried, but works when set down	Intermittent Power / Orientation-Sensitive Connection	View Details
–	Vacuum smells musty or moldy when turned on	Biological Growth in Tank / Filter	View Details
–	Vacuum vibrates excessively or rattles during operation	Mechanical Imbalance / Loose Components	View Details
–	Vacuum will not pick up liquids (for wet/dry capable cordless models)	Wet Pickup Function Failure	View Details
–	Vacuum will not turn on at all; no lights, no sound when trigger is pulled	No Power / Dead Tool Condition	View Details

DeWalt Cordless Vacuums Error Codes

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