AOP - Bosch control channel write failure panic on iPhone

AOP - Bosch control channel write failure is a kernel panic that makes an iPhone restart on its own, usually leaving a Panic-Full log under Analytics Data. When this error line appears, the first part to check is Charge port flex (speaker line). Severity is rated high, and confidence in this diagnosis is likely. Below you will find what the error means and its most common causes; to pin down what is wrong with your phone, scan the log with the Panic Scan app.

Basic information

Code

AOP - Bosch control channel write failure

Category

Audio

Severity

High

Confidence

Likely

Part to check

Charge port flex (speaker line)

What it means

Panic while playing audio (often at high volume). The charge port flex carries the speaker signal, so it's a frequent cause.

Common causes

• Faulty / water-damaged charge port flex
• Shorted loudspeaker
• Audio amplifier IC

Errors in the same category

• AudioAudio ICAudio IC / speaker amplifier ICMedium
• AudioTaptic EngineTaptic Engine (vibration)Low
• mediaserverdmediaserverd watchdog timeoutAudioMedium
• audiomxdaudiomxd watchdog timeoutAudioMedium