I have an argos sienna treadmill showing an e1 error

Ask the manufacturer

If you wish to get some details about treadmill error codes and repair; check the site linked here. Pull up older posts. http://electro-medical.blogspot.com/

You have to check the Speed sensor and its position.Normally you will find the speed sensor near motor pulley. In almost all treadmills E1 Error is related to speed sensor.
If you wish to get some details; check the site linked here. Pull up older posts.
http://electro-medical.blogspot.com/

Your problem might be that a magnet has fallen off. Here's an illustrated guide that should make fixing it easy: http://fixmytreadmill.blogspot.com/2010/10/how-to-fix-treadmill-e1-error.html

Good luck

E1 error code : Unplug unit remove motor shroud and check the distance between the speed sensor and the flywheel and ensure that the speed sensor is properly attached to the motor frame. Check also speed sensor connections.
Unplug the electrical cord from the wall outlet and from the treadmill, wait 1 minute and turn the power switch on again. If treadmill recovers to normal operation, you may continue to use the treadmill.
Check the motor brushes either they worn or not sitting properly

Your problem might be that a speed sensor magnet has fallen off. Here's an illustrated guide that should make fixing it easy: http://fixmytreadmill.blogspot.com/2010/10/how-to-fix-treadmill-e1-error.html

Good luck.

Your problem might be that a magnet has fallen off. Here's an illustrated guide that should make fixing it simple: http://fixmytreadmill.blogspot.com/2010/10/how-to-fix-treadmill-e1-error.html

Good luck.

my lifespan treadmill has an error code e1

Your problem might be that the sensor magnet has fallen off. Here's an illustrated guide that should make fixing it easy: http://fixmytreadmill.blogspot.com/2010/10/how-to-fix-treadmill-e1-error.html

Good luck.

Your problem might be that a magnet has fallen off. Here's an illustrated tutorial that should make fixing it easy: http://fixmytreadmill.blogspot.com/2010/10/how-to-fix-treadmill-e1-error.html

Good luck.