Question about Canon EOS 400D / Rebel XTi Digital Camera

1 Answer

Canon 400D error code 01

Hello Please advise how to fix error code 01. Communications between the camera and lens is faulty. Clean the lens contacts.  Please advise the best way to do this. We have cleaned the contacts with a glasses cloth and tried 2 different lens and recharged the battery, but still not working. Thanks Susan

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert who has written 50 answers of more than 400 characters.


    An expert whose answer got voted for 20 times.

  • Expert
  • 148 Answers
Re: 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

Posted on Dec 23, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

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

Err 01....communication between lens and camera is faulty.Please clean the lens contact...this is the error message...please say a solution..

The contacts are the little gold coloured metal squares that touch between your lens and the body. Clean them with isopropyl alcohol (moistened glasses wipes work well) and see how you go.

Jun 10, 2013 | Canon EOS 1100D / Rebel T3 Digital Camera

1 Answer

I have the tamron 18-200 mm XR Di-II if macro lens. The camera displays the error Err 01 Communication between the camera & lens is faulty. Clean the lens contacts. This error...

So, have you cleaned the contacts as you were advised? You do this by removing the lens and cleaning the contacts on the camera body and on the lens where they meet with a cotton swab lightly dampened with rubbing alcohol.

May 19, 2011 | Digital Cameras

1 Answer

When i try to take continuous shots, my camera gives an error. it says my camera and lens communication is faulty. error 01. clean the lens contacts. what is the lens contacts?

This is a basic fix, but have you removed the lens from the camera body and reattached it all? Check all of the connections while you're in there. Hope this helps =]

Mar 03, 2011 | Canon EOS-20D Digital Camera

1 Answer

Err 99 on a 400d how can it b fixed

Welcome to Fixya
Err 99 could mean several different things, such as... Memory Card, Lens or Lens contacts....

Here's what you can try:
Remove the memory card an enable "shooting with out memory card" and see if you still get the error. If it works your memory card is bad. Try another lens if you can. Clean the lens contacts with a pencil eraser (be careful not to get eraser dust in the camera body or in the lens). Worst case scenario is, Err 99 could be related to the shutter failing which would mean a trip to Canon.

Feb 27, 2011 | Canon EOS 400D / Rebel XTi Digital Camera...

1 Answer

Canon 400D I have an error code Err01 I have cleaned contacts between the camera and lens but still have the error code

I had the Error 01 message on my 400D
I changed the support battery ( CR 2016 3 V) which is placed inside the main battery compartment.
This did the trick.

Jan 18, 2010 | Canon EOS 40D Digital Camera

1 Answer

Err 01communications between the camera and lens is faulty. Clean the lens contacts.

Some people have reported that this error comes up when they have changed a lens on the camera, If the previous lens was IS enabled and was switched on when the old lens was attached, re attach the previous lens and switch off before attaching the new lens.
If this does not work, clean the contacts with a cotton bud dipped in methylated spirits. Hold the lens above you when doing this so nothing falls into the lens.

Jul 11, 2009 | Canon EOS 400D / Rebel XTi Digital Camera

1 Answer

Error 99 comes while taking photographs

This could well be a serious issue, which you'd need to send to your manufacturer to fix, however there are a few things you could try first:

Take your lens off and with a clean rubber (like on the end of a pencil), clean the contacts of both the camera and the lens.

Apr 11, 2009 | Canon EOS 400D / Rebel XTi Digital Camera...

1 Answer

Error 99 in EOS 400D

Here is a link which may help you.

It may be that the contacts on the lens is dirty, follow the directions, by using a clean pencil eraser (I would also suggest to use alcohol and clean the contacts after using the eraser). Also to remove the date button battery and the other batteries, then turn on the camera (with all batteries removed).
Then put the batteries back in.

Jul 23, 2008 | Canon Rebel XT / EOS 350D 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

Not finding what you are looking for?
Canon EOS 400D / Rebel XTi Digital Camera Logo

592 people viewed this question

Ask a Question

Usually answered in minutes!

Top Canon Digital Cameras Experts


Level 2 Expert

246 Answers


Level 3 Expert

2598 Answers


Level 2 Expert

68 Answers

Are you a Canon Digital Camera Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides