Breaking News
Home / Mac Software / How to use Apple Diagnostics on your Mac

How to use Apple Diagnostics on your Mac

How to use Apple Diagnostics on your Mac

Apple Diagnostics tests your Mac for hardware issues and suggests solutions.

After isolating an issue on your Mac to a possible hardware issue, you can use Apple Diagnostics to help determine which hardware component might be causing the issue. Apple Diagnostics also suggests solutions and helps you contact Apple Support for assistance.

If your Mac was introduced before June 2013, it uses Apple Hardware Test instead.

How to use Apple Diagnostics

  1. Disconnect all external devices except keyboard, mouse, display, Ethernet connection (if applicable), and connection to AC power.
  2. Make sure that your Mac is on a hard, flat, stable surface with good ventilation.
  3. Shut down your Mac.
  4. Turn on your Mac, then immediately press and hold the D key on your keyboard. Keep holding until you see a screen asking you to choose your language. When Apple Diagnostics knows your language, it displays a progress bar indicating that it’s checking your Mac:
  5. Checking your Mac takes 2 or 3 minutes. If any issues are found, Apple Diagnostics suggests solutions and provides reference codes. Note the reference codes before continuing.
  6. Choose from these options:
    • To repeat the test, click ”Run the test again” or press Command (⌘)-R.
    • For more information, including details about your service and support options, click ”Get started” or press Command-G.
    • To restart your Mac, click Restart or press R.
    • To shut down, click Shut Down or press S.

If you choose to get more information, your Mac starts up from macOS Recovery and displays a web page asking you to choose your country or region. Click ”Agree to send” to send your serial number and reference codes to Apple. Then follow the onscreen service and support instructions. When you’re done, you can choose Restart or Shut Down from the Apple menu.

This step requires an Internet connection. If you’re not connected to the Internet, you’ll see a page describing how to get connected.

Learn more

If holding down the D key at startup doesn’t start Apple Diagnostics:

  • If you’reusing a firmware password, turn it off. You can turn it on again after using Apple Diagnostics.
  • Hold down Option-D at startup to attempt to start Apple Diagnostics over the Internet.

Apple Diagnostics: Reference codes

Use this article to find more information on codes generated in Apple Diagnostics.

Using the reference code table

  1. Find the definition of the specific Apple Diagnosticsreference code and learn what next steps are needed to troubleshoot the issue.
  2. For issues you cannot resolve, contact Appleor take your computer to an Apple Authorized Service Provider or Apple Retail Store to find out which service and support options are available. Be sure to share the Apple Diagnostics reference code with Apple or your service provider. If you plan to visit an Apple Retail Store, make a reservation at the Genius Bar (available in some countries and regions only).
Reference Code Code Definition Next Steps
ADP000 No issues found No issues found. If you think you have a hardware issue, contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine 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 Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available.
CNW007
CNW008
No Wi-Fi networks were detected. Either there are no Wi-Fi networks in range, or the Wi-Fi hardware may be having an issue. Run the test again in range of a Wi-Fi network.

If this code appears a second time, further troubleshooting may be required. Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine 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 Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available.
NDD001 There may be an issue with the USB hardware. Disconnect all external devices except keyboard, mouse, and Ethernet adapter. Run the test again.

If this code appears again, further troubleshooting may be required. Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine 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 Apple Authorized Service Provider or Apple Retail Store to determine 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 Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available.
NDR001
NDR003
NDR004
There may be an issue with the trackpad. Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available.
NDT001
NDT002
NDT003
NDT004
NDT005
NDT006
There may be an issue with the Thunderbolt hardware. Disconnect external Thunderbolt devices and run the test again.

If this code appears a second time, further troubleshooting may be required. Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available.

NNN001 A serial number was not detected. The computer requires service. Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine 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 Apple Authorized Service Provider or Apple Retail Store to determine 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 Apple Authorized Service Provider or Apple Retail Store to determine 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 Apple Authorized Service Provider or Apple Retail Store to determine 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 Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available.
PPM002
PPM003
PPM004
PPM005
PPM006
PPM007
PPM008
PPM009
PPM010
PPM011
PPM012
PPM013
PPM014
PPM015
There may be an issue with the onboard memory. Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available.
PPP001
PPP002
PPP003
There may be an issue with the power adapter. Disconnect the MagSafe power adapter from the computer and the power outlet, then reconnect. Run the test again.

If this code appears a second time, further troubleshooting may be required. Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available.

PPP007 The power adapter was not tested. There may be an issue with the power adapter, or it may not be connected. To test the power adapter, reconnect it to the computer and the wall outlet. Run the test again.

If this code appears a second time, further troubleshooting may be required. Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available.

PPR001 There may be an issue with the processor. Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available.
PPT001 The battery was not detected. Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available.
PPT002
PPT003
The battery will need to be replaced soon. It is functioning normally, but holds less charge than it did when it was new. Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available.
PPT004 The battery requires service. The battery is not functioning normally, though you may not notice a change in its behavior or the amount of charge it holds. You can continue to use your battery before it’s checked without harming your computer. You should first confirm this issue by running Apple Diagnostics over the Internet, which uses the latest diagnostic information. To do this, turn off your Mac by choosing Shut Down from the Apple () menu. Then press the power button to turn on your Mac. Immediately press and hold Option-D until Apple Diagnostics begins.

If running Apple Diagnostics over the Internet confirms the issue, contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store. They’ll tell you which service and support options are available.

PPT005 The battery is not installed properly. Shut down and discontinue use. The computer requires service. Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available.
PPT006 The battery requires service. The battery is not functioning normally, though you may not notice a change in its behavior or the amount of charge it holds. You can continue to use your battery before it’s checked without harming your computer. Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available.
PPT007 The battery needs to be replaced. The battery is functioning normally but holds 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 Apple Authorized Service Provider or Apple Retail Store to determine 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 Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available.
VDH002
VDH004
There may be an issue with a storage device. Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available.
VDH005 Unable to start OS X Recovery. Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available.
VFD001
VFD002
VFD003
VFD004
VFD005
VFD007 
There may be an issue with the display. Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available.
VFD006 There may be an issue with the graphics processor. Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available.
VFF001 There may be an issue with the audio hardware. Contact Apple or take your computer to an Apple Authorized Service Provider or Apple Retail Store to determine which service and support options are available.

 

 

About vijayan2006

Leave a Reply

Your email address will not be published. Required fields are marked *