Question about Canon EOS 400D / Rebel XTi Digital Camera

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Error code 99 canon E0S 450D - Canon EOS 400D / Rebel XTi Digital Camera

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  • jennak33 Jul 30, 2008

    i was using my camera for a fun shoot and the code error 99 kept coming up. i would turn the camera on and off, take the battery in and out, as well as the memory card... still after like 4 shots the err 99 kept appearing! 
    i was using the camera at a concert in the rain, but i even used it after that and it worked fine. 
    please help me!

  • andrew50 Aug 10, 2008

    I was out walking in the rain all day yesterday with the camera wrapped up well. I've taken a few photographs this morning indoors but now the camera makes a whirring noise that continues even when I switch the camera off. I get an error message about needing to clean the lens' contacts. I saw a solution about using a plastic eraser to do this (I used a cotton bud gently on the contacts to see if there was any moisture to soak up). No solution has worked for me yet.

  • Jason Adlard May 11, 2010

    There are many reasons for an error 99.

    please tell me what was happening when the error came up



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Try this:

Posted on Dec 04, 2008

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I was shooting just for fun, and all of a sudden err99 kept coming up. it told me to turn off the camera or take the battery in and out, i was shooting in the rain a day before.. but i used it even after the rain when it was sunny and it didnt happen! help please!

Posted on Jul 30, 2008

  • jennak33 Nov 10, 2008

    bad news.. i took mine in the beginning of august for that error 99 problem. I took it to henrys where i bought my canon rebel xti.. turns out i had to send it in for repair.. a whole MONTH before i got it back!!
    aparently my shutter was broken.. how? i have no idea.


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Canon eos 350d err 99

Posted on Nov 08, 2008

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1 Answer

Error code 001 with canon 450d

Seems a lot of people are having the same problem. Take the lens off the camera and clean the little gold contacts (metal squares) on both the lens and the body with isopropyl alcohol or pre-moistened len wipes.

Mar 21, 2013 | Canon EOS 450D Digital Camera

1 Answer

When i on my Canon EOS 450D camera it says error 99 turn off and on the camera or re install the battery how can fix this problem

The error 99 code has different sources, to identify it do this:

Remove the Lens, and try shooting at various speed high (1/1000 or more) then at more normal ones 1/15, 1/50 etc.
If you see the error 99 then contact canon this is a problem wit the camera.
In this case contact Canon directly.

If you still don' have the error message, then put back the lens and try shooting at different apertures (for a lens the error 99 correspond with an aperture problem)
try every aperture. If the problem appears then, clean the lens contacts both on the camera and on the lens.

If the problem is still there, contact the lens brand, you certainly have a blocked or sticky aperture.

Hope this helps.

May 19, 2011 | Canon EOS 450D Digital Camera

1 Answer

Hi there I have recntly purchased a Canon 15m EF fish eye lense which I have used on a Canon 450d + 350d body. On the 350d I get an error 99 code and on the 450d get a 01 error code. This leads me...

Rob, Error 99 is Canon's catch all error code, yes my first impression would also have been to clean the contacts but something else that is happening is the camera firmware may need to be updated to handle that particular lens. Camera updates are free on the Canon site and actually can solve a lot of hidden processing problems.

That lens isn't really suitable for your 450d as it's an APS-C sensor size with a 1.6 crop focal factor which will give you more like a 24mm focal length.

You may also want to format the memory card and clean your battery terminals both the battery and the contacts in the battery compartment.

Best little cleaning item for cleaning contacts is a pencil eraser (new) lens contacts or battery something about the soft rubber cleaning off the most suborn dirt and electrolysis.

Don't use a "used" eraser obviously it will transfer the dirt to the contacts over removing what you want.

Hope these techniques work they have for me

Feb 21, 2011 | Canon 15mm f/2.8 FD Lens

1 Answer

I got Canon EOS Kiss 450D (Japan). Recently, the problem i encountered is ERR 99. I have read an article that it might be with the body lense "connection" and some might arise from battery...

Canon's error 99 is a catch all for connection problems. You can clean the gold contacts with a pencil eraser by lightly polishing the surface and whip with a lens cloth not tissue. However after reading your description about the battery and charger I would tend to believe you have a battery problem. Before changing the battery see if the camera recognizes it and give a state of charge.

I would proceed with this problem with
Cleaning the lens contact with a new pencil eraser
Clean battery contacts in the camera the pencil eraser can be used her as well
Check state of charge with the battery and make sure it isn't leaking

If all of the above fails I would enter the Canon web site and update the firmware of the camera.
Then recheck the battery.

This should bring you back to a working camera

Jan 20, 2011 | Canon EOS 450D Digital Camera

1 Answer

No display nor will it shoot


Jul 11, 2010 | Canon EOS 450D Digital Camera

1 Answer


Unfortunately, the Error 99 code is a catch-all code that means an UNKNOWN error has occurred. Because of this, it is difficult to pin down exactly what is causing the problem.

It could be a fault with either the camera (main circuit board, software, shutter mechanism etc.) or even the lens.

For starters, I would make sure that the lens electrical contacts are clean and the lens is mounted correctly and fully locked home. If you have a spare lens, try that also.

Next, I would reformat the memory card (do this in camera). If you have a spare memory card, try that also.

Check that the battery contacts are clean, and also the contacts of any external hardware such as vertical grips.

If none of these solve the problem, the only option left is to take it to a Canon service agent :-(

Hope this helps,


Apr 30, 2010 | Canon EOS Rebel XSi Digital Camera

1 Answer

Canon 450D - Error 99 only when flash pops up

Flash Tube is bad inside the Flah head,

Mar 08, 2017 | Canon EOS 450D Digital Camera

2 Answers

Error 99 on EOS Canon 450D

This is what the people at the canon tech support say to do for error 99

read this!! :)

The guy at tech support listened and then told me that the lens contacts were dirty and to get a pencil with an eraser on the end, just a regular old pencil with a red rubber eraser. Detach the lens from the camera, hold it so that the lens’ gold contacts are pointing down and lightly erase their exposed surface, cleaning them of any hand oil that might have gotten on them.

Do the same thing with the gold contacts inside the camera body. This is a bit harder but it’s doable: just hold camera so lens opening points down so no gunk falls in. Erase lightly. I used a lens cloth and dabbed at the contacts rather than blow them so as not to blow the erasings inside the camera.

I did this to each of my three lenses just to be sure. Lo and behold, it worked

hope this works for you!!!! have a nice day!! :) :)

Dec 04, 2009 | Canon EOS 450D 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

Occasionally I get 'ERROR 5' appear on the display on my EOS 450D - it is suggested that the pop-up flash is being impeded, but I know that it isn't. What is happening?

This is a common canon mechanical error.

Most of there SLRS do this the release inside the pop up flash hangs either due to weak spring or release catch itself. If it hangs for even a split second you get error code.

Try This.
  1. Clean Flash Release & Apply wd-40 with a q-tip to moving parts. DO NOT SPRAY INTO CAMERA. Use oil lightly.
  2. Or Assist flash when it tries to p up by lifting on flash gently. Maybe one day canon will fix this problem.
PS this happens to even Brand new Canons.

Mar 08, 2009 | Canon EOS 450D Digital Camera with 18-55...

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