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Top iPhone Panic Codes Every Technician Should Know (2025 Update)
Understanding iPhone panic codes can save technicians hours of troubleshooting by pinpointing the exact hardware issue causing random restarts and system crashes. This article covers the most common panic codes in 2025, their meanings, and how to use them to improve your repair workflow.Check your panic log now
What Are Panic Codes?
Panic codes are identifiers within the panic-full logs generated when an iPhone detects critical hardware or kernel-level failures. They indicate specific issues such as NAND faults, CPU failures, or Tristar charging IC problems.
Top Panic Codes and What They Mean
| Panic Code | Possible Cause |
|---|---|
| missing sensor (p) | Potential NAND or board communication issue |
| sep panic | Baseband or Secure Enclave fault |
| cpu nan | CPU-related fault, often related to power delivery |
| charge_domain | Charging IC or Tristar fault |
| userspace watchdog timeout | System freeze due to hardware instability |
How to Use Panic Codes in Diagnostics
- Locate the panic-full log from the iPhone.
- Identify the panic code within the
panicStringfield. - Cross-reference with the table above to suspect the faulty component.
- Upload the log to the BIM Panic Analyzer for instant, accurate matching and repair suggestions.
Knowing panic codes accelerates repair decisions and increases your success rate in fixing iPhone restarts and crashes.