Not all Mac models can run the Internet-based Apple hardware test. Some MacBook models need to use a local version of the hardware test, which has to be installed on the hard drive or saved on OS X DVD. Other Macs manufactured after 2013 can use the latest version of the Apple hardware test, which is called the Apple Diagnostics test. Global Nav Open Menu Global Nav Close Menu; Apple; Shopping Bag +. Explore the world of Mac. Check out MacBook Pro, iMac Pro, MacBook Air, iMac, and more. Visit the Apple site to learn, buy, and get support. Diagnose problems with your Mac. Apple Diagnostics and Apple Hardware Test are tools you can use to diagnose problems with your computer’s internal hardware, such as the logic board, memory, and wireless components. You may be able to start your Mac with Apple Diagnostics or Apple Hardware Test, even if it doesn’t start using macOS.
Most Mac users enjoy several years of trouble-free experience, but eventually, time will come when hardware problems arise. Although it rarely happens, problems can be caused by a motherboard issue, a failing hard drive, a GPU problem, or lack of memory space. Fortunately, Apple has a way to detect, prevent, and solve any hardware-related issue. Apple Hardware Test is the first step. You can use it to check if there are serious hardware issues to deal with. Don’t worry, because you can run the test yourself. We will teach you how below.
What Mac Models Can Run Apple’s Internet-Based Hardware Test?
Not all Mac models can run the Internet-based Apple hardware test. Some MacBook models need to use a local version of the hardware test, which has to be installed on the hard drive or saved on OS X DVD. Other Macs manufactured after 2013 can use the latest version of the Apple hardware test, which is called the Apple Diagnostics test. Here’s a guide on how to use Apple Diagnostics test. As for the only Mac models that can use the web-based version of the Apple hardware test are as follows:
- 11-inch MacBook Air 3 (late 2010 through 2012)
- 13-inch MacBook Air 3 (late 2010 through 2012)
- 13-inch MacBook Pro 8 (early 2011 through 2012)
- 15-inch MacBook Pro 6 (mid-2010 through 2012)
- 17-inch MacBook Pro 6 (mid-2010 through 2012)
- MacBook 7 (mid-2010)
- Mac Mini 4 (mid-2010 through 2012)
- 21.5-inch iMac 11 (mid-2010 through 2012)
- 27-inch iMac 11 (mid-2010 through 2012)
It is important to note that the mid-2010 through early 2011 Mac models may require to update the EFI firmware before you can run the web-based Apple Hardware Test. If you are uncertain if you need to update the EFI firmware or not, you can do the following:
- Go to Apple menu and click About This Mac.
- A new window will open. Click the More Info button.
- If your Mac is running in OS X Lion or the later version, select System Report. Otherwise, proceed to step 4.
- Another window will open. Highlight Hardware in the left portion of the screen.
- On the opposite corner of the screen, take note of the boot ROM version number of your Mac and the SMC version number.
- Once you have these details, go to the EFI and SMC Firmware Update page on Apple’s website. Compare the versions you have with the latest available. If your Mac is running on an older version, you need to download the most recent version on the same web page.
How to Use the Internet-Based Apple Hardware Test
As soon as you have verified and confirmed that your Mac is capable of running the Internet-based Apple Hardware Test, you can start using it. Here’s how:
- Turn off your Mac first.
- If you are running a MacBook, connect it to an AC power source. Do not run the test with only your MacBook’s battery as the power source.
- Press the Power button while holding down the Option and D keys. Continue until the Starting Internet Recovery message pops up on your display.
- Wait for a few seconds. You will soon be prompted to select a network. Use the drop-down menu to choose from the list of available network connections.
- Select a wireless network and enter the password if asked. Press Return or Enter. You can also click the checkmark button on your display.
- As soon as you are connected to your chosen network, you will see a message on your screen that says, Starting Internet Recovery. This will take a while because the Apple Hardware Test will be downloaded to your Mac. Once it is completed, you will be prompted to select a language.
- To select a language to use, use the Up and Down arrow keys or the mouse cursor.
- The Apple Hardware Test will then continue to check what hardware is installed on your Mac. Again, this will take time.
- Before you proceed with the actual test, it’d be better if you verify first what hardware was found so you can ensure that all your Mac’s components are correct and accounted for. Check if the exact amount of memory is displayed, along with the graphics and CPU specs. If you suspect that something is wrong, verify your Mac’s configuration by going to Apple’s support site. If the displayed config does not match with what your Mac model’s configuration should be, your device might be failing. To verify your Mac’s hardware specs, navigate to the Hardware Profile tab.
- If all configuration details are correct, proceed with the testing by going to the Hardware Test tab.
- Note that the Apple Hardware Test can support two different types of testing; a standard test and an extended test. While the standard test is generally a good option, the extended test is highly recommended, especially if there is an issue with your Mac’s graphics card or RAM.
- To run the standard test, select the Standard Test option and click the Test button. At this point, the hardware test should start. It will take several minutes to complete, so just be patient. Do not worry if you hear your Mac’s fans rev up and down. That’s normal during the hardware testing process.
- Once the test is done, a list of potential issues or a No trouble found message will be displayed in the test results pane. If there is an error, check what it is about. We listed some of the most common error codes below alongside their meanings:
- 4AIR – AirPort wireless card
- 4ETH – Ethernet
- 4HDD – Hard disk (includes SSD)
- 4IRP – Logic board
- 4MEM – Memory module (RAM)
- 4MHD – External disk
- 4MLB – Logic board controller
- 4MOT – Fans
- 4PRC – Processor
- 4SNS – Failed sensor
- 4YDC – Video/Graphics card
These error codes generated by the Apple Hardware Test seem to be cryptic, and in some cases, only certified Apple service technicians can understand them. But because most of these codes are recurring, they’ve become known.
- If no problem was found, you could continue running the extended test. It can detect graphics and memory problems better than the standard test. To do the extended test, select the Perform Extended Testing option and click the Test button.
- If by any chance, you’d like to stop the test, just click the Stop Testing button.
- Once you are done using the Apple Hardware Test, end it by clicking the Shut Down or Restart button.
If no error was found after the test and your Mac is still experiencing problems, then you can check your system. It might be loaded with files you don’t need, or your RAM is taken up by unnecessary programs and apps. To fix the problem, download third-party tools like Tweakbit MacRepair.
If you’re running into errors and your system is suspiciously slow, your computer needs some maintenance work. Download Outbyte PC Repair for Windows, Outbyte Antivirus for Windows, or Outbyte MacRepair for macOS to resolve common computer performance issues. Fix computer troubles by downloading the compatible tool for your device.
See more information about Outbyte and uninstall instructions. Please review EULA and Privacy Policy.
See more information about Outbyte and uninstall instructions. Please review EULA and Privacy Policy.
Using the reference code table
- Find the definition of the specific Apple Diagnostics reference code and learn what next steps are needed to troubleshoot the issue.
- For issues you cannot resolve, contact Apple or 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).
Run Apple Hardware Test
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. https://performanceclever540.weebly.com/blog/mac-os-x-1010-yosemite-installer-download.
|
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.
|
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. Whatsapp web audio doesn't download on macbook.
|
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.
|