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Canon 40d. When I power the body on, it wakes up and then instantly goes to error code 99. Shooting not possible. Sensor cleaning isn't even initiated.

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Hi Kennethpryor,

Error 99 is caused by an unknown electrical problem that the camera detects, but doesn't understand. It can be caused by a bad lens, or poor contact/connection with the lens, or a power problem, or any number of other issues.
Try cleaning the contacts on the lens and camera's lens mount, and the battery, and camera's battery contacts.

  • Clean the lens contects on the rear portion of the lens with a clean pencil eraser.

Canon 40d. When I power - 05674f0.gif


  • Remove and replace the battery.

  1. Power the camera off
  2. Remove the battery.
  3. Wait 15 seconds.
  4. Replace the battery.
  5. Power the camera on.

  • Please remove the 3rd party accessory and replace it with a genuine Canon accessory.

  • Remove third party lens and try with Canon EF or EF-S lens


Sometimes there gets to be a slight film on the electrical contacts of even new cameras & lenses. If that doesn't do it, try swapping lenses.

If still you get the problem , then it must need servicing.
Good luck and have a nice day.
Thanks for using Fixya.

Posted on Jul 03, 2010

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Shooting is not possible, turn the power switch to off and on or reinstall the battery


Hi there :the Error 99 is a comunication error between camera body and lens .are you using Canon lens?Try the camera body with a/another Canon lens in Camera body and try the lens on another Canon camera.With this troubleshoting you can know if the camera body is failing or lens is failing.I hope this information will help you.

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When I try to take a picture I get an error 99 message. Shooting is not possible turn off power switch or remove battery


Hiyou have very common problem of canon dslr product. usually problem come from defective shutter unit. However, there is cause from lens also. Would you remove lens and push shutter button? if no error 99, then the problem come from lens---usually power diaphragm control fpc defective.If shows error 99, then you have body problem. At this point, still you have to check more. please set camera M mode and bulb shutter speed, you have to look front of camera if mirror goes up and show to you picture sensor. would you tell me more later. Thanks and best regard!

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Error code 99 on a 40D?


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.

Apr 17, 2011 | Canon EOS 400D / Rebel XTi Digital Camera

1 Answer

Got Error 99 on my 40D. Have done all the obvious: remove battery, replace battery, check lenses, SD cards. Have talked with several people who tell me it's "common" with 40D. Any assistance you...


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.

Thanks!

Mar 27, 2011 | Canon EOS 40D Digital SLR Camera Digital...

1 Answer

My Canon 40D suddenly came down with the dreaded Error 99 for no apparent reason. I have tried all the usual, battery, memory card, lens, but no luck. Even on the bulb setting the shutter won't stay open....


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.

Thanks

Jan 30, 2011 | Canon EOS 40D Digital Camera

1 Answer

Error 99


'Error 99' indicates some problem with the AF contacts. This is a common error in Canon lenses. It could indicate a very simple problem like dirty contacts or a much serious one like the breakage of USM cable.
As a first step, you can try cleaning the lens and body contacts (the metal contacts between the lens and body) using a pencil eraser. Be careful to hold the body facing down so that no dust falls inside. After cleaning both the lens and the body contacts, re-attach the lens and try shooting. If the AF does not work still, you need to take the lens to an authorized service center.

Jan 07, 2010 | Canon EOS 40D Digital Camera

1 Answer

Error 99


'Error 99' indicates some problem with the AF contacts. This is a common error in Canon lenses. It could indicate a very simple problem like dirty contacts or a much serious one like the breakage of USM cable.
As a first step, you can try cleaning the lens and body contacts (the metal contacts between the lens and body) using a pencil eraser. Be careful to hold the body facing down so that no dust falls inside. After cleaning both the lens and the body contacts, re-attach the lens and try shooting. If the AF does not work still, you need to take the lens to an authorized service center.

Aug 27, 2009 | Canon EOS 40D Digital Camera

2 Answers

Error 99


the lens contacts are dirty - 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've used a lens cloth and dabbed at the contacts rather than blow them so as not to blow the erasings inside the camera.
Works well for me....let me know how you fair!

Mar 16, 2009 | Canon EOS 40D Digital Camera with 17-85mm...

1 Answer

Canon EOS 40D - Error 99


The 40D is not a water resistant camera body. It is VERY important to keep it from getting wet, even "just a little mist".

The first thing you need to do is remove the battery, and the lens. Then let the camera dry out in a warm and not-humid location for a few days. Do NOT try to power it up until you are 100% certain that it is dry.

The water at Sea World has salt in it. You may have salt in an electrical connection, even after the water has dried. You can try using a swab very lightly moistened with rubbing alcohol to dry the connections you can reach - the battery connection and the connections between the camera body and the lens (clean the connections on the lens as well as the camera body). Then let the camera dry AGAIN for at least 24 hours before you reattach the lens and insert the battery.

If these do not fix the camera then you will need to send it in to Canon for cleaning and refurbishing.

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2 Answers

Error 99


Trouble shooting Error 99

1. Solution: Remove and replace the battery.

Power the camera off
  1. Remove the battery.
  2. Wait 15 seconds.
  3. Replace the battery.
  4. Power the camera on.

2. Clean the lens contacts.

Clean the lens contects on the rear portion of the lens with a clean pencil eraser.
lenscontacts.gif
  • Mount the lens on the camera.
  • Take a picture.
If the error persists, the camera and/or lens may need be serviced by a qualified Canon Service Technician.


3. Remove the 3rd party accessory.
Please remove the 3rd party accessory and replace it with genuine Canon Accessory.


4. Solution: Remove third party lens and try with Canon EF or EF-S lens.
Remove third party lens and try with Canon EF or EF-S lens This link will bring you to the camera page on Canon's website: More trouble shooting, drivers and downloads http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&tabact=SupportDetailTabAct&fcategoryid=215&modelid=11154#DownloadDetailAct Best of luck. Could you please rate this advice. Thanks so much!

Mar 27, 2008 | Canon Rebel XT / EOS 350D Digital Camera

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