2155-0004
Nintendo Nintendo Switch
Severity: ModerateWhat Does This Error Mean?
Error 2155-0004 means your Nintendo Switch detected a problem with the microSD card. This can mean the card is not seated properly, is incompatible, or has developed errors. Removing, reinserting, or reformatting the card usually solves it.
Affected Models
- Nintendo Switch
- Nintendo Switch Lite
- Nintendo Switch OLED
Common Causes
- The microSD card is not fully inserted into the slot and has a poor connection
- The microSD card has developed corrupted data or bad sectors
- The microSD card is not compatible with the Nintendo Switch (wrong format or fake card)
- The microSD card slot on the console has dust or debris causing a poor contact
- The card was removed while the Switch was powered on, causing file system errors
How to Fix It
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Power off the Switch completely. Press and hold the power button for 3 seconds, then select 'Power Options > Power Off'. Remove the microSD card, wait 10 seconds, then reinsert it firmly until it clicks. Power the Switch back on.
Always power off before removing or reinserting a microSD card to avoid corrupting the file system.
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Check the microSD card for physical damage. Look at the gold contacts on the card for any scratches, tarnish, or debris. Clean them gently with a dry cotton swab if needed. Inspect the card slot for any bent pins or visible debris.
A single bent pin in the microSD slot can prevent the card from being read properly.
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Try the microSD card in a computer to check if it is readable. If your computer cannot read it either, the card has failed and needs to be replaced. If it reads fine on a computer, the issue may be format-related.
A card that reads on a computer but not the Switch is likely formatted incorrectly. The Switch requires exFAT format for cards over 32 GB.
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Reformat the microSD card using the Switch's built-in formatter. Go to System Settings > System > Formatting Options > Format microSD Card. This will erase all data on the card and set it to the correct format for the Switch.
Back up any screenshots, videos, or game data to a computer first. Formatting erases everything on the card.
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Test with a different microSD card if you have one available. If the Switch works fine with a different card, your original card is faulty and needs to be replaced. Use a name-brand card (Samsung, SanDisk, Lexar) rated for at least UHS-I speed.
Counterfeit or very cheap microSD cards are a common source of errors. Stick to reputable brands purchased from legitimate retailers.
When to Call a Professional
If the Switch does not recognize any microSD card — including a brand new one — the microSD card slot may be damaged. This is a hardware repair that requires professional service. Contact Nintendo Support at nintendo.com/consumer/repair for repair options.
Frequently Asked Questions
What size and type of microSD card does the Nintendo Switch support?
The Nintendo Switch supports microSD, microSDHC, and microSDXC cards up to 2 TB. Cards up to 32 GB should be formatted as FAT32. Cards 64 GB and larger should be exFAT. The Switch will offer to reformat a card to the correct format if needed. For best performance, choose a card rated UHS-I (Class 10) or faster.
Will I lose my game saves if the microSD card fails?
Game saves are stored on the Switch's internal memory by default, not on the microSD card. MicroSD cards store downloaded game software, screenshots, and video captures. If your card fails, you lose the game data on it (you can redownload purchased games) but not your save files.
Can I move games from internal storage to the microSD card?
Yes. Go to System Settings > Data Management > Manage Software. Select a game and choose 'Move to MicroSD Card' or 'Move to System Memory'. You can move games back and forth freely. The game works identically regardless of where it is stored.