Question about Canon EOS 40D Digital SLR Camera Digital Camera with 17-85mm IS USM Lens

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I was shooting today and all of a sudden I got an error code 01, which says that the lens and camera aren't communicating and that I need to clean the lens contacts. For one thing, I'm not sure how to do that and, for another thing, it does it on more than one lens. I just had my Canon 100-400 lens repaired by Canon and I'm wondering if something happen to the contacts that makes that lens and others not communicate properly. My camera started working again, but I couldn't make any changes for awhile (shuuter speed, aperature, ISO, etc.), several of my menus disappeared and the shooting quality changed from RAW to small jpeg. Any ideas?

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Posted on Mar 16, 2009

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1 Answer

Busy and or Error 01


For error message 01 the manual says: Communications between the camera and lens is faulty. Clean lens contacts.
Solve: Clean the electrical contacts on the camera and lens and use a Canon lens.
SO if you are using a different lens or a non Canon lens this could be what is wrong.

If you never changed a lens, it still can be that something went wrong in the communication between the camera and lens. Just careful remove the lens and with a dry and lint free cloth, clean all contacts on the lens and in the camera. While working on the lens, close the camera with the camera cap, or put the camera face down.
Don't use anything sharp while working on a lens or a camera.

Dec 04, 2013 | Canon EOS 60D Digital Camera

1 Answer

I keep getting Err 01 and no photo is taken what do I do?


ERR 01 is a lens to body communication error. Clean the lens and body contacts (put a small amount of alcohol on a Q-tip - do not use rubbing alcohol!!!). Try again. If that doesn't work, problem may be in lens or body. Using the flat of your fingernail, push in the contacts on the body inside the mirror box to clean any tarnishing between the contacts the the circuit (they are spring loaded). Try another lens - if the other lens works, then your problem is in the first lens. If it still gives the ERR 01 code then the problem is in the body.

Has the camera been impacted or had water/liquid spillage?

Sep 16, 2013 | Canon Rebel XT / EOS 350D Digital Camera

1 Answer

I've had my T3i for about 18 months. Suddenly, I am getting an Error 01 when using my CANON EFS 55-250 lens which has always worked fine before. Any ideas? Cleaning the contacts has not helped.


Without pulling the error codes I can't give you a firm cause, but the most common reason you get erratic error messages is a failure of the aperture unit in the lens (or sometimes the IS unit). They are connected to the back of the lens circuit board by flexible circuits, and as you zoom them back and forth you get cracks in the flexes, like you used to get with the old point and shoot AF film cameras

Mar 17, 2013 | Canon EOS Digital Rebel XS / 1000D IS...

1 Answer

Error 01 in canon eos 5d


Err 01: Lens to body communication error
1.The camera to lens communication is somehow being interfered with could be a problem within the lens itself, possibly the camera body, or something as simple as a smudged fingerprint on the lens mount contacts,
2. Check the lens and the contacts
3. Also check below link if you need a canon eos 5d service manual
http://goo.gl/1rXwuc

thanks

Apr 26, 2012 | Canon EOS 40D Digital Camera

1 Answer

How to repair err 01 on canon 1000d "Communication


So, have you cleaned the contacts? Remove the lens and using a cotton swab lightly dampened with rubbing alcohol, clean the contacts on the lens and the camera body where they meet.

Oct 15, 2011 | Canon EOS Digital Rebel XS / 1000D IS...

1 Answer

Error 01-no communication between lens & camera


communication error between lens and camera ( Error 01 ) what should i do, i m using canon 40d

Mar 23, 2011 | Canon EOS 40D Digital Camera

1 Answer

Error 01


Error 01 is about the communication of the LENS with the camera. Please try to re-attach it and make sure it is correctly fitted. Also you can remove the lens, start cleaning the contacts, put it back in place again and then test.

Good luck!

Oct 24, 2010 | Canon EOS 30D 8.2MP Digital SLR Camera...

2 Answers

What does error 01 mean


Error 01: A communication problem between the lens and the body. Try cleaning the the area between the objective/Lens and the body. If that doesn't work, try another lens. If that doesn't work, try the first lense in another body, and if that works, it's most likely the body that's broken.

Jul 29, 2010 | Canon Rebel XT / EOS 350D Digital Camera

1 Answer

Canon 400D error code 01


reset camera by removing battery completely for about 10 seconds.
otherwise, time for service.
sounds like a processor board issue.
you can use a contact cleaner sparingly, available from frys electronics or any other electronic reseller like radio shack.
good luck
mark

Dec 19, 2007 | Canon EOS 400D / Rebel XTi Digital Camera

1 Answer

Canon err 01


This error means "Communication between the camera and lens is faulty. Clean the lens contacts." If you are using the same lens on both cameras, the problem is with the metal contacts on the rear of the lens where it communicates with the camera body. You can gently clean these contacts by using a clean pencil eraser. Make sure you hold the lens "bottom down" as you clean it so that the eraser debris falls to the table instead of inside the lens!

Nov 08, 2007 | Canon EOS-1D Mark II Digital Camera

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