AirPods Pro Error Code 4: Transparency Mode Not Working — How to Fix It

Easy 15-45 minutes Medium Severity Verified June 2026
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Error Code
4
Brand
AirPods
Product Type
wearable
Severity
Medium
DIY Difficulty
Easy
Estimated Fix Time
15-45 minutes
AirPods Pro Error Code 4 indicates that Transparency Mode is failing to activate or function correctly, preventing you from hearing your surrounding environment through the earbuds. This issue can stem from outdated firmware, incorrect audio settings, blocked microphone meshes, or a software glitch between your AirPods and your Apple device. Most cases can be resolved at home with a few targeted software resets and physical cleaning steps, no technical expertise required.
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Tools You'll Need

How to Fix Error Code 4

  1. Check AirPods Listening Mode Settings

  2. Restart Your iPhone or iPad

  3. Re-pair AirPods Pro to Your Device

  4. Update AirPods Pro Firmware

  5. Clean the Microphone and Speaker Meshes

    Never use water, rubbing alcohol, or compressed air directly into microphone ports, as this can permanently damage the microphone membranes.

  6. Disable and Re-enable Conversation Boost

  7. Reset AirPods Pro to Factory Settings

    A factory reset will remove your AirPods from all iCloud-linked Apple devices. You will need to re-pair them on each device you use.

  8. Test on a Second Apple Device

Parts You May Need

AirPods Pro replacement ear tips
Check Price on Amazon
AirPods Pro replacement ear tips
Check Price on Amazon
AirPods Pro replacement ear tips
Check Price on Amazon
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When to Call a Professional

If Transparency Mode still does not work after completing all steps above — including a factory reset and testing on a second device — one or more microphones inside the AirPods Pro are likely physically damaged or the H2 audio chip has failed. At this point, contact Apple Support directly or visit an Apple Store or Apple Authorized Service Provider. If your AirPods Pro are within their one-year limited warranty or covered by AppleCare+, repair or replacement may be free or low-cost. Do not attempt to open or disassemble the AirPods Pro yourself, as they are not user-serviceable and doing so will void any remaining warranty.

Frequently Asked Questions

Why did my AirPods Pro transparency mode suddenly stop working?
The most common causes are a firmware bug introduced by a recent update, a Bluetooth pairing glitch with your iPhone, or a blocked microphone mesh. Less commonly, it can be caused by physical damage to the external microphones. Start by restarting your iPhone and re-pairing your AirPods — this resolves the issue for most users.
How do I force my AirPods Pro firmware to update?
Apple does not provide a manual update button, but you can trigger an update by placing your AirPods in the charging case, connecting the case to power, and keeping your paired iPhone nearby on Wi-Fi. Leave this setup undisturbed for 30 minutes to an hour. Check the firmware version under Settings > Bluetooth > ⓘ next to your AirPods to confirm the update installed.
Does transparency mode not working mean my AirPods Pro are broken?
Not necessarily. In most cases, the issue is software-related and can be fixed with a re-pair or factory reset. Hardware failure is less common but does occur, particularly if the AirPods were exposed to moisture, dropped, or are showing other audio problems like muffled sound or crackling. Test on a second device to distinguish software from hardware issues.
Can I use only one AirPod in transparency mode?
Yes. AirPods Pro transparency mode works with a single AirPod in your ear. If transparency mode works in one AirPod but not the other, that points to a microphone defect in the non-working AirPod specifically, which Apple Support can diagnose and potentially replace under warranty.
Will Apple replace my AirPods Pro if transparency mode is broken?
If your AirPods Pro are within the one-year limited warranty and the defect is not caused by accidental damage, Apple will typically repair or replace them at no charge. AppleCare+ extends coverage and reduces the cost of accidental damage replacements. Contact Apple Support or visit an Apple Store to have the microphones diagnosed before pursuing a replacement.

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