What is Canon 99 EOS-30D Error 99? How to effectively solve problems with the Canon eos-30d 99 error messages?

July 14, 2020 by Henry Alderson


Here are some simple ways to fix canon eos-30d 99 error message.

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Error 99 - Undefined message. The camera knows something is wrong, but not quite that. You must exclude all possibilities. Like a battery, lens or CF card.



The Battery Level Is Too Low. Sensor Cannot Be Cleaned.

Description: The battery is insufficient, therefore, when cleaning the image sensor and shutter curtains, the shutter closes, which can damage the image sensor.

Unable To Read Image

Description: When you try to view images on the camera, the message “Cannot read image” is displayed. This error may occur for the following reasons:


If the images can be read normally, the card may not work correctly with an error message. In this case, format the memory card as described in the instruction manual. The EOS camera user guide can be downloaded by clicking here on the Canon Europe EOS camera support page.


Description: This is a warning regarding the date and time of the battery. A date and time battery saves the date and time of the camera. When the date / time battery is empty, “CbC” appears on the LCD screen.

Solution: Replace the date / time battery with a new one as described in the user manual. LeadershipYou can download the EOS camera user experience by clicking here on the Canon Europe EOS camera support page.


Description: The image sensor is similar to a film of a film camera. If dust gets on the image sensor, it may look like a dark spot on images. The mirror hangs and the curtain opens. Then, “CLEAN” or “CLn” flashes on the LCD screen.

ErrCF / CardErr / Full File Number

canon eos-30d error 99 message

Description: if the folder number reaches 999 and the file number reaches 9999, this error message is displayed even if there is space on the card.


FullCF / CardFull / CF Card Full


L - Error Message

How do I fix my Canon lens error?

Turn on the camera without a memory card inserted. Put the camera on its back and turn it on while holding down the autofocus button to try to autofocus with the lens extended. Blow compressed air around the lens or use a vacuum cleaner.

Description: If the [LOCK] switch on the right is set and you are trying to use one of the locked camera controls, “L” is displayed in the viewfinder and on the LCD screen. [LOCK] appears on the recording parameter display.

October 2020 Update:

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