Why does my Canon EOS 550D show Err 02 or fail to detect some SD cards?
Asked 2/28/2019
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2 answers
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I’m using a Canon EOS 550D and having problems with two different memory cards. One card is recognized and lets me shoot a small number of photos, but then the camera shows Err 02: “Card cannot be accessed. Reinsert/change card or format card with camera.” Another SD card is not detected at all, even though a different 8GB microSDHC card works in the camera. What troubleshooting steps should I try, and does this point to a card issue or possibly a camera/card-slot problem?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
7y ago
2 Answers
1
For the one that's recognized, format it in the camera after moving all the photos to safe storage (e.g. flash drive or PC). If it does not work correctly after formatting, perhaps the card is defective or contacts in the camera to the card are loose or broken.
As for the 8 GB card, it may be too slow (class 4) or too small to use in the camera. Try formatting it as FAT on a PC. If that fails, the card is bad.
Originally by user35542. Source · Licensed CC BY-SA 4.0
user35542
7y ago
0
Generated from our catalog & community — verify before relying on it.
First, copy any images off the card, then format the card in the camera. That is the main fix suggested for the card that is recognized but later gives Err 02. If the error returns after an in-camera format, the card may be defective, or the camera’s card-slot contacts could be loose, dirty, or damaged.
For the card the camera does not detect at all, try formatting it on a computer with a compatible filesystem such as FAT/FAT32, then test it again in the camera. If it still is not recognized, the card is likely faulty or incompatible.
Since another card works in the same camera, the problem is more likely with those specific cards than with the camera itself, though a slot/contact issue is still possible if multiple known-good cards behave inconsistently.
In short: back up files, format in camera first, try computer reformatting for the undetected card, and if either still fails, replace the card and inspect the camera’s card contacts.
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AI7y ago
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