Question about Canon EOS 400D / Rebel XTi Digital Camera

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My Canon is displaying - Err 99 what should I do?

I love my camera and it has served me well for over 3 years but a couple weeks ago it started failing to capture the image and flashing ?Err 99? on the display! The only way to get rid of the message was to turn the camera off. Or reinstall the batteries. I tried to ignore it but now it happens very often! I'll appreciate any help on this. Thank You! Jhon I have just started experiencing the Err 99 message on my canon 400D. I've only had the camera a couple of months but have taken it on holiday backpacking. The lens is a tamron 28-200mm which I have had for about 6 years (from my old 35mm camera) and has done a lot of travelling. Out of the blue it started displayning the Err 99 symbol and made a grinding noise when I turn it on. It doesn't happen when I change lenses. Is there a way to try and fix this or do I need to take the lens in for a service (which seems to be as expensive as buying a new lens)!!!

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  • jnibs Dec 19, 2007

    I continually keep getting an error 99 code. I have cleaned the battery contacts as well as the camera lens contacts per a Canon tech, but it will work for a bit and the quit. I just bought the camera at Best Buy Nov 13, 2007

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A common cause of Err 99 on the Digital Rebels that have some age on them is shutter failure. There is a switch called CN2 in the shutter that fractures and causes either bad flash sync or shutter failure-or both. The repair is to replace the shutter. Sometimes the CN2 switch can be repaired but we find at our shop it's better to replace the shutter with a new one. That way, with a new shutter, you will get years more of good service from the camera.

There are other causes for Err 99. Check the electrical contacts on the rear mount of the lens and the coresponding contacts in the lower portion of the mirror box in the camera body. Make sure they are clean and not distorted or bent.

There are more but these two are, by far, the most common.

Posted on Dec 04, 2007

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Related Questions:

3 Answers

Canon EOS Digital Rebel XTI 400D Displays Err 99. Problem with CF card. Replaced with brand new card-still same err 99 camera is totally charges, acts dead, keep flashing Err CF, I try to format, it...


Hi,

1. Turn off the camera.
2. Remove the lens, battery, and CF card.
3. Allow the camera to sit without power for approximately 20 minutes.
4. Insert a fully charged battery, and turn on the camera.
5. Depress the shutter button as you would to take a picture.
Does the “ERR 99′ message appear? If it does, then the camera should be
serviced. If it does not, then please proceed to the next set of steps:
1. Turn off the camera.
2. Insert the CF card.
3. Turn on the camera.
4. Format the CF card in the camera.
5. Depress the shutter button as you would to take a picture.
Does the “ERR 99′ message appear? If so, then the CF card is the most
likely source of the issue. Try using a different card.
If the message does not appear, please complete the following steps:
1. Turn off the camera.
2. Clean the lens contacts by gently rubbing them with a pencil eraser
or soft cloth. Be careful that you do not let any debris fall into the
camera body.
3. Reattach your lens.
4. Turn on the camera.
5. Depress the shutter button as you would to take a picture.
If the “ERR 99′ message only appears when one particular lens is
attached, then that lens should be examined by a service technician.
If you see the “ERR 99′ with a different Canon lens attached, then the
camera should be serviced.

Aug 31, 2008 | Canon EOS-20D Body only Digital Camera

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Err 99(Error Code). Removed battery and re-instaled. Still no image on display or Flash Card. Problem with my EOS Rebal 300 Digital Camera.


Seems to be related to the lens, is it fit to be used with this camera? disconnect the lens and try again.


Aug 19, 2008 | Cameras

1 Answer

Err 99


If you're using a dslr type camera....with removable lenses.....try cleaning the electrical contacts, between the lens and the camera. remove the lens and use a pencil eraser...being careful not to get any debris in the camera or lens. dirty contacts cause a lot of problems. hope this helps.

Apr 06, 2009 | Canon Rebel XT Digital Camera

3 Answers

Err 99 in canon 350D


To isolate the cause of the issue, do the following: -
1. Turn off the camera.
2. Remove the lens, battery, and CF card.
3. Allow the camera to sit without power for approximately 20 minutes.
4. Insert only a fully charged battery, and turn on the camera.
5. Depress the shutter button as you would to take a picture.

Does the “ERR 99" message appear? If so, the camera may be faulty and requires a service. If it does not, then: -
1. Turn off the camera.
2. Insert the CF card.
3. Turn on the camera.
4. Format the CF card in the camera.
5. Depress the shutter button as you would to take a picture.

Does the “ERR 99" message appear? If so, then the CF card is faulty. Try a different card. If the message does not appear: -
1. Turn off the camera.
2. Clean the gold contacts on the lens by GENTLY rubbing them with a pencil eraser or soft cloth. Keeping the camera face pointing down, also clean the gold contacts on the camera, being careful that you do not let any debris fall into the camera body.
3. Reattach your lens.
4. Turn on the camera.
5. Depress the shutter button as you would to take a picture.

If the “ERR 99" message only appears when one particular lens is attached, then that lens should be examined by a service technician.
If you see the “ERR 99" with a different Canon lens attached, then the camera is faulty and should be serviced.

Apr 06, 2009 | Canon Rebel XT / EOS 350D Digital Camera

2 Answers

Canon 450D, ERROR 99 only when flash pops up


Err 99 usually means your lens contacts are dirty either on the lens itself or on the camera.

To isolate the cause of the issue, do the following: -
1. Turn off the camera.
2. Remove the lens, battery, and CF card.
3. Allow the camera to sit without power for approximately 20 minutes.
4. Insert only a fully charged battery, and turn on the camera.
5. Depress the shutter button as you would to take a picture.

Does the “ERR 99" message appear? If so, the camera may be faulty and requires a service. If it does not, then: -
1. Turn off the camera.
2. Insert the CF card.
3. Turn on the camera.
4. Format the CF card in the camera.
5. Depress the shutter button as you would to take a picture.

Does the “ERR 99" message appear? If so, then the CF card is faulty. Try a different card. If the message does not appear: -
1. Turn off the camera.
2. Clean the gold contacts on the lens by GENTLY rubbing them with a pencil eraser or soft cloth. Keeping the camera face pointing down, also clean the gold contacts on the camera, being careful that you do not let any debris fall into the camera body.
3. Reattach your lens.
4. Turn on the camera.
5. Depress the shutter button as you would to take a picture.

If the “ERR 99" message only appears when one particular lens is attached, then that lens should be examined by a service technician.
If you see the “ERR 99" with a different Canon lens attached, then the camera is faulty and should be serviced.

Mar 31, 2009 | Canon Rebel XT / EOS 350D Digital Camera

1 Answer

''err 99'' code appearing fairly often recently on Canon Rebel XT


To isolate the cause of the issue, do the following: -

1. Turn off the camera.
2. Remove the lens, battery, and CF card.
3. Allow the camera to sit without power for approximately 20 minutes.
4. Insert only a fully charged battery, and turn on the camera.
5. Depress the shutter button as you would to take a picture.


Does the “ERR 99′ message appear? If so, the camera may be faulty and requires a service. If it does not, then: -

1. Turn off the camera.
2. Insert the CF card.
3. Turn on the camera.
4. Format the CF card in the camera.
5. Depress the shutter button as you would to take a picture.


Does the “ERR 99′ message appear? If so, then the CF card is faulty. Try a different card. If the message does not appear: -

1. Turn off the camera.
2. Clean the gold contacts on the lens by GENTLY rubbing them with a pencil eraser or soft cloth. Keeping the camera face pointing down, also clean the gold contacts on the camera, being careful that you do not let any debris fall into the camera body.
3. Reattach your lens.
4. Turn on the camera.
5. Depress the shutter button as you would to take a picture.
If the “ERR 99′ message only appears when one particular lens is attached, then that lens should be examined by a service technician.
If you see the “ERR 99′ with a different Canon lens attached, then the camera is faulty and should be serviced.

Mar 19, 2009 | Canon Rebel XT / EOS 350D Digital Camera

1 Answer

My Canon is displaying - Err 99 what should I do?


This can mean a host of different problems but try these things to fix it:
  1. clean the lense contacts as poor conection between the camera and the lenses can cause this. Also clean the contacts on the body of the camera.  The contacts should be cleaned with a plastic eraser, but make sure it is clean before using it.
  2. Clean the battery contacts (on the battery)
  3. Change lenses and see if you have the same problem (does it only have this problem on one lense?)
  4. Make sure you have the lates firmware installed.
Don't swap lenses while the camera is writing to the memory card, lots of things like this can cause this error message. Also the flash can cause it.
Usually the lense is the culprit so make sure it is fully cleaned.
Cheers
E-man

Sep 08, 2008 | Canon EOS 400D / Rebel XTi Digital Camera

1 Answer

My Canon is displaying - Err 99 what should I do?


See if Sigma has any updated advice on this. Otherwise, I don't mean to sound rude or harsh, but unfortunately you may be out of luck with the compatibility...you will need to get a Canon lens. Error 99 is just a communication error and cleaning the contacts is about all you can really do so if that hasn't worked...I'm sure this is not the news you want to hear, but contact Sigma if you haven't already and see what they say.

Take care!

May 30, 2008 | Canon EOS 400D / Rebel XTi Digital Camera

17 Answers

My Canon is displaying - Err 99 what should I do?


Just found this info which should help diagnose the err 99 issues (info direct from Canon apparently)

To isolate the cause of the issue, do the following: -

1. Turn off the camera.
2. Remove the lens, battery, and CF card.
3. Allow the camera to sit without power for approximately 20 minutes.
4. Insert only a fully charged battery, and turn on the camera.
5. Depress the shutter button as you would to take a picture.


Does the “ERR 99′ message appear? If so, the camera may be faulty and requires a service. If it does not, then: -

1. Turn off the camera.
2. Insert the CF card.
3. Turn on the camera.
4. Format the CF card in the camera.
5. Depress the shutter button as you would to take a picture.


Does the “ERR 99′ message appear? If so, then the CF card is faulty. Try a different card. If the message does not appear: -

1. Turn off the camera.
2. Clean the gold contacts on the lens by GENTLY rubbing them with a pencil eraser or soft cloth. Keeping the camera face pointing down, also clean the gold contacts on the camera, being careful that you do not let any debris fall into the camera body.
3. Reattach your lens.
4. Turn on the camera.
5. Depress the shutter button as you would to take a picture.
If the “ERR 99′ message only appears when one particular lens is attached, then that lens should be examined by a service technician.
If you see the “ERR 99′ with a different Canon lens attached, then the camera is faulty and should be serviced.

Apr 10, 2007 | Canon EOS Elan 7ne 35mm SLR Camera

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