- Gaming and consoles
- Nintendo Switch
2016-0390
Nintendo 2016-0390 on Nintendo Switch: unable to access microSD card
Risk level
Low
Usually safe to check without specialist tools.
Urgency
Medium
Quick answer
The console shows "Unable to access microSD card". Power it off, remove the card, check that it is a supported type for your console, reinsert it and run a system update.
Safety first
Stop and check this first
- Formatting a microSD card erases it and Nintendo says the data cannot be recovered. Copy screenshots to a computer first; downloadable software can be redownloaded with the same Nintendo Account.
Safe checks you can perform
- Power off, remove the card and check its type and capacity
- Update the system
- Test the microSD card the way Nintendo describes
Leave these tasks to a qualified professional
- Do not attempt this professional task: Nintendo repair service
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Nintendo repair service
What they doNintendo tests the console with one or more of the microSD cards that failed after you book a repair from its support page. Only when the error repeats with several cards.
They must show youwhat test reproduced the fault.
In writingwhat was repaired or replaced and the result of the test after the repair.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Power off, remove the card and check its type and capacity
- Who:
- you.
- How:
- hold the POWER Button for at least three seconds, select Power Options and Power Off, then remove the card. Check it is a supported type for your console and compare the label capacity with what the console shows.
- Result that matters:
- supported type and a capacity within 1 GB of the label.
- If the type is not supported:
- replace it with a supported card.
- If the difference is more than 1 GB:
- Nintendo tells you to contact the retailer of the card.
- Evidence to keep:
- a photo of the card label and the capacity shown on the console.
Evidence: Nintendo Switch error code 2016-0390
Update the system
- Who:
- you.
- How:
- connect to the internet and run a system update from System Settings, then repeat what you were doing.
- Result that matters:
- the console is on the latest system version and the code is gone or repeats.
- If the update finishes and the code is gone:
- the system version was part of the problem.
- If the code repeats on the latest version:
- format the card, try another card or download to the system memory.
- Evidence to keep:
- the system version shown in System Settings.
Evidence: Nintendo Switch error code 2016-0390
Test the microSD card the way Nintendo describes
- Who:
- you.
- How:
- power off the console, remove the microSD or microSD Express card and reinsert it. Check it is a supported type for your console. If the error continues, format the card, try a different card, or remove it and download to the system memory.
- Result that matters:
- whether the error follows the card or stays with the console.
- If it only fails with one card:
- the card is the likely source; use another supported card.
- If it fails with several supported cards and with the system memory:
- Nintendo says the console needs repair; send one or more of the affected cards with it.
- Evidence to keep:
- card brand, capacity shown by the console and which cards you tried.
Evidence: Nintendo Switch error code 2016-0390
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Gaming and consoles
- Brand
- Nintendo
- Product type
- Nintendo Switch
Known code variants
- código error Switch 2016-0390
- error Nintendo 2016-0390
- Nintendo error 2016-0390
- Nintendo Switch 2016-0390
- No se ha podido acceder a la tarjeta microSD 2016-0390
- Switch 2 2016-0390
- Switch error code 2016-0390
- Unable to access microSD card 2016-0390
What it means
Nintendo shows 2016-0390 with the message "Unable to access microSD card" on Nintendo Switch 2 and Nintendo Switch. The steps point at the card first: whether it is a supported microSD or microSD Express type, whether its real capacity matches the label, and whether it can be read after a system update. Only if the error repeats with several cards does Nintendo send the console to repair, so the code by itself does not prove a console fault.
Warnings and stop conditions
- Mediumsource verified
Formatting a microSD card erases it and Nintendo says the data cannot be recovered. Copy screenshots to a computer first; downloadable software can be redownloaded with the same Nintendo Account.
Evidence: Nintendo Switch error code 2016-0390 · Nintendo Switch error code 2002-4683
Symptoms and causes
Probable causes · in order
- Card type not supported by the consoleCommon
The card is not a type the console supports; Nintendo says replacing it with a supported type may solve it.
Evidence: Nintendo Switch error code 2016-0390
- Capacity does not match the labelPossible
The console shows a total capacity more than 1 GB away from the label or packaging; Nintendo sends you to the retailer.
Evidence: Nintendo Switch error code 2016-0390
- Card that cannot be readPossible
A supported card still fails after reinserting it and updating; formatting it or using another card fixes the error.
Evidence: Nintendo Switch error code 2016-0390
- Console fault seen with several cardsLess common
The error persists with multiple microSD or microSD Express cards, which is the case Nintendo sends to repair.
Evidence: Nintendo Switch error code 2016-0390
Virtual technician
Does 2016-0390 still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
Nintendo Switch error code 2016-0390
Nintendo UK Support · 2026 · official_doc
- 2
Nintendo Switch error code 2002-4683
Nintendo UK Support · 2026 · official_doc
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