Apple Diagnostics reference codes
Get more information about the reference codes shown in Apple Diagnostics test results.
When you use Apple Diagnostics to test your Mac, the test results include one or more of these reference codes.
If you can't use this information to resolve the issue, contact Apple or take your Mac to an Apple Authorised Service Provider (AASP), Apple Store or an Independent Repair Provider. Provide the code you received from the test. Genuine Apple parts are also available for out-of-warranty repairs through Self Service Repair.*
Code | Definition | More information |
|---|---|---|
ADP000 | No issues found | No issues found. |
ALS001 | There may be an issue with the ambient light sensor. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
BMT001 BMT003 BMT004 BMT005 | There may be an issue with the Touch ID sensor. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
CEH001 CEH002 | There may be an issue with the case handle. | The housing latch may be unlocked. Verify the latch is in the fully locked position, then run the test again. If this code appears again, further troubleshooting may be required. Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
CNT001 CNT002 CNT003 CNT004 CNT005 CNT006 CNT007 | There may be an issue with the Ethernet hardware. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
CNW001 CNW003 CNW004 CNW005 CNW006 | There may be an issue with the Wi-Fi hardware. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
CNW007 CNW008 | No Wi-Fi networks are detected: no Wi-Fi networks are in range, or there may be an issue with the Wi-Fi hardware. | Run the test again in range of a Wi-Fi network. If this code appears again, further troubleshooting may be required. Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
DFR001 | There may be an issue with the Touch Bar. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
IMU001 | There may be an issue with the accelerometer or gyroscope. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
LAS001 LAS002 LAS003 LAS004 | There may be an issue with the open/close sensor. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
NDC001 NDC003 NDC004 NDC005 NDC006 | There may be an issue with the camera. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
NDD001 | There may be an issue with the USB hardware. | Disconnect all external devices except for the keyboard, mouse and Ethernet adapter (if applicable). Run the test again. If this code appears again, further troubleshooting may be required. Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
NDK001 NDK003 NDK004 | There may be an issue with the keyboard. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
NDL001 | There may be an issue with the Bluetooth hardware. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
NDR001 NDR003 NDR004 NDR005 NDR006 | There may be an issue with the trackpad. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
NDR007 | An external input device was detected. | Disconnect any external input devices and run the test again. |
NDR008 | There may be an issue with the trackpad. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
NDT001 NDT002 NDT003 NDT004 NDT005 NDT006 | There may be an issue with the Thunderbolt hardware. | Disconnect any external Thunderbolt devices and run the test again. If this code appears again, further troubleshooting may be required. Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
NNN001 | A serial number was not detected. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
PFM001 PFM002 PFM003 PFM004 PFM005 PFM006 PFM007 | There may be an issue with the System Management Controller (SMC). | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
PFR001 | There may be an issue with the computer's firmware. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
PPF001 PPF003 PPF004 | There may be an issue with the fan. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
PPM001 | There may be an issue with a memory module. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
PPM002 PPM003 PPM004 PPM005 PPM006 PPM007 PPM008 PPM009 PPM010 PPM011 PPM012 PPM013 PPM014 PPM015 PPM016 | There may be an issue with the onboard memory. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
PPN001 PPN002 | There may be an issue with the power-management system. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
PPP001 PPP002 PPP003 PPP004 PPP005 PPP006 PPP007 PPP008 | There may be an issue with the power adapter. | Make sure you’re using the correct power adapter, disconnect the power adapter from the computer and wall socket, then reconnect. Run the test again. If this code appears again, further troubleshooting may be required. Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
PPP017 | Both ports of the Apple 35W Dual USB-C Port power adapter are in use. | When running Apple Diagnostics using the Apple 35W Dual USB-C Port Power Adapter, use only one of the charging ports. |
PPP018 | Fast charging is not supported with the currently connected power adapter. | Refer to Apple Support article HT212755 to learn which power adapters, cables and displays can fast charge this device. |
PPP020 | No power adapter was detected. | Make sure you’re using the correct power adapter, disconnect the power adapter from the computer and wall socket, then reconnect. Run the test again. If this code appears again, further troubleshooting may be required. Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
PPR001 | There may be an issue with the processor. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
PPT001 | The battery was not detected. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
PPT002 PPT003 | The battery will need to be replaced soon. It is functioning normally, but can't hold as much charge as it did when it was new. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
PPT004 | The battery needs a service. The battery is not functioning normally, but you may not notice a change in its behaviour or the amount of charge it holds. You can continue to use your battery before it gets checked without harming your computer. | If you're using a Mac with an Intel processor, you can confirm this result by using Apple Diagnostics over the Internet: Choose Shut Down from the Apple menu , then turn on your Mac again and immediately press and hold Option-D until Apple Diagnostics begins. If this code appears again or you're using a Mac with Apple silicon, contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
PPT005 | The battery is not installed properly. Shut down your computer and discontinue use. The computer needs a service. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
PPT006 | The battery needs a service. The battery is not functioning normally, though you may not notice a change in its behaviour or the amount of charge it can hold. You can continue to use your battery before it gets checked without harming your computer. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
PPT007 | The battery needs to be replaced. The battery is functioning normally but can hold significantly less charge than it did when it was new. You can continue to use the battery until you replace it without harming your computer. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
PPT021 | The battery charge level is too low to complete the test. | Charge the battery to 6% or higher and run the test again. If this code appears again, further troubleshooting may be required. Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
VDC001 VDC003 VDC004 VDC005 VDC006 VDC007 | There may be an issue with the SD card reader. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
VDH001 VDH002 VDH003 VDH004 | There may be an issue with a storage device. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
VDH005 | Unable to start macOS Recovery. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
VFD001 VFD002 VFD003 VFD004 VFD005 VFD006 VFD007 | There may be an issue with the display or graphics processor. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
VFD008 VFD009 | There may be an issue with the HDMI controller or controllers (if equipped with more than one HDMI port). | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
VFD010 | There may be an issue with the Apple I/O card. | If the Apple I/O card is installed in your computer, reseat the card, then run the test again. If you reseat the card and this code appears, further troubleshooting may be required. Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. If you uninstall the Apple I/O card, this code is expected. |
VFF001 VFF002 VFF003 | There may be an issue with the audio hardware. | Contact Apple or take your computer to an AASP or Apple Store to find out which service and support options are available. |
* Independent Repair Providers have access to genuine Apple parts, tools, training, service guides, diagnostics and resources. Repairs by Independent Repair Providers are not covered by Apple's warranty or AppleCare plans, but may be covered by the provider's own repair warranty. Self Service Repair provides access to genuine Apple parts, tools and repair manuals so that customers who are experienced with the complexities of repairing electronic devices can perform their own out-of-warranty repairs. Self Service Repair is currently available in certain countries or regions for specific models of Mac computers introduced in 2020 or later. To view repair manuals and order parts for eligible models, go to the Self Service Repair
