Greenworks Pressure Washer E1 Error — Fix Guide

What Does This Error Mean?

E1 on a Greenworks pressure washer means the motor thermal protection has tripped. Switch off, wait 20 minutes, and check the water inlet and nozzle before restarting. The most common cause is idling with the trigger released.

Affected Models

Greenworks GPW1501
Greenworks GPW1602
Greenworks GPW1803
Greenworks GPW2003
Greenworks Pro 2300

Common Causes

Motor running with trigger released — pump recirculates and overheats
Blocked inlet filter or kinked hose reducing water flow
Continuous use beyond the model's rated duty cycle
Partially blocked nozzle increasing pump load

How to Fix It

Switch off and unplug.

Unplugging ensures a full electronic reset and allows the thermal cutout to reset safely.
Wait at least 20 minutes in a cool area.

Moving to shade speeds recovery. The cutout is self-resetting — no button to press.
Rinse the inlet filter.

Remove the garden hose at the inlet and pull out the filter screen. Rinse under water to clear sediment. A blocked filter starves the pump and speeds overheating.
Switch off between tasks, not just release the trigger.

Greenworks electric models keep the motor running when the trigger is released. This rapidly heats the pump. Power off whenever you are not actively spraying.
Check and clear the nozzle.

A clogged nozzle increases the load on the pump. Remove and clear it with a nozzle pin or cleaning tool before restarting.

Frequently Asked Questions

My Greenworks E1 returns every few minutes — why?

Recurring E1 during normal use usually means insufficient inlet water flow, a partially blocked nozzle, or use beyond the duty cycle. Check inlet and nozzle first before considering a hardware fault.

Is Greenworks E1 a warranty fault?

E1 from normal overuse is not covered by warranty. E1 that appears during short, correct use with a proper water supply may indicate a faulty thermal switch — contact Greenworks support.