topic Re: EOS R6 - SD Card reader not working in EOS DSLR & Mirrorless Cameras

EOS R6 - SD Card reader not working

jaygorephoto — Wed, 02 Apr 2025 18:46:04 GMT

Hey everyone,

I have a Canon EOS R6 (not the mkII), and the second SD card slot (Slot 2) has stopped reading memory cards. I’ve tested multiple cards (which work in other devices and in Slot 1), cleaned the slot carefully, reset the camera settings, and updated the firmware. Nothing appears visibly damaged, and the prongs look fine, but Slot 2 still won’t recognize any card.

I've had this camera for a little while now and now I have no clue what to do. I'm a student so I can't really afford costly repairs so would anyone know an estimate to fix this or would canon even be able to fix this because my camera is outdated?

Thanks everyone

Re: EOS R6 - SD Card reader not working

deebatman316 — Wed, 02 Apr 2025 23:36:11 GMT

Are these Full Sized cards or Micro SD Cards in an adapter. Are they know good name brand cards or knock off cards.

Re: EOS R6 - SD Card reader not working

jaygorephoto — Wed, 02 Apr 2025 23:51:51 GMT

Full sized one is from Lexar and the rest are from Sandisk.

Re: EOS R6 - SD Card reader not working

deebatman316 — Thu, 03 Apr 2025 00:04:56 GMT

Where were these cards purchased a reputable source, Amazon, or any other type of online marketplace.

Re: EOS R6 - SD Card reader not working

jaygorephoto — Thu, 03 Apr 2025 00:09:52 GMT

All from amazon

Re: EOS R6 - SD Card reader not working

deebatman316 — Thu, 03 Apr 2025 00:23:05 GMT

We’ve seen counterfeit cards from Amazon on this forum before. Amazon IS NOT a reputable source for SD Cards. B&H Photo for instance is a reputable source. So I’d source another SD Card from a reputable company to see if it works correctly.

Re: EOS R6 - SD Card reader not working

jaygorephoto — Thu, 03 Apr 2025 01:57:42 GMT

I also went to a camera repair shop and they used their cards and it still didn't work.

Re: EOS R6 - SD Card reader not working

56vick — Thu, 04 Sep 2025 18:45:15 GMT

Hi Jay. Have you found a solution for this? I'm having the same issue with my R6, but in slot 1. With shipping it would cost me $580 to send it in to Canon for repairs, before insuring the package. I'm hoping you've discovered a fix.