I get an E6 message while trying to sew on my Brother cs-6000

It is covered here in videos and articles. Try running it with no thread in it at all. If it runs, it is a problem with threading. Speed issues are caused by the foot controller rather than the machine UNLESS, it is an issue with the motor itself.

https://www.google.com/search?q=Brother+FS155+Sewing+Machine.+E6+error

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Follow the instructions below if you receive the error message "E6"
1. Check if the machine rattles and stops as soon as the sewing starts
- Upper thread could be tangled or threaded incorrectly
- Check that the thread take-up lever is threaded

- Raise the presser foot to raise the needle to its highest position and re-thread the machine
2. Remove the bobbin and bobbin case
- Clean any lint or loose threads

- Install the bobbin case so that the projection on it aligns with the spring and install the bobbin into the bobbin case

3. The needle could be bent
- Check that the needle does not hit the needle plate
- Replace the needle if necessary
- Make sure the flat side is facing the back
If the problem persists, your machine may require service.
If the machine is in warranty, call Brother Customer Service at 1-877-Brother (1-877-276-8437) for warranty options.
If the machine is out of warranty, contact a Brother Authorized Service Center for repair by clicking on the link below:
http://www.brother-usa.com/service/default.aspx
https://help.brother-usa.com/app/answers/detail/a_id/54048/~/error-message-e6

An E1 message appears on the panel Brother

Brother CS 6000 E1 error message my presser foot is not up

Frequently Asked Questions

FAQs Troubleshooting CS 6000 6000b 6000t 6000i United States Brother

E6 ERROR

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What kind of thread are you trying to use? Is it a decent fresh thread? If, it is old, throw it out and buy some fresh quality thread. Usually, cheap thread is the problem.

Go to www.brother-usa.com and you can download your manual for free or call them, Your E6 message means that you have a thread tangled and you must get it out of the machine, totally unthread and brush bobbin area and feed dogs then, unplug and it will reset, then plug in and rethread,

just had same problem oil it, there is a little hole on top of machine close to the bobbin threader drop some oil in there to oil the motor. turn the wheel may take several drops and a couple of applications....thank god my mom can sew too...lol she found the problem!! My manual is in spanish and I am american born and only speak and read english.lol

http://www.brother-usa.com/ModelDocuments/Consumer/Users%20Manual/UM_CS_6000_ES_2000_EN_185.PDF

I have the same problem and found that the bobbin case is scratched. These are quite expensive so I hope yours is something more simple. Keeping the bobbin area clean is also a necessity.

Are you using the right size needle? Try using an 80. Also try taking it to a service center. To find one near you go here: http://www.brother-usa.com/service/