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 Authorized 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 learn 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 learn 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 learn 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 learn 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 learn 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 learn 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 learn 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 learn which service and support options are available.

LAS001

LAS002

LAS003

LAS004

There may be an issue with open/close sensor.

Contact Apple or take your computer to an AASP or Apple Store to learn 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 learn 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 (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 learn 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 learn 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 learn 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 learn 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 learn 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 again, further troubleshooting may be required. Contact Apple or take your computer to an AASP or Apple Store to learn 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 learn 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 learn 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 learn 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 learn 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 learn 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 learn 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 learn 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 that you're using the correct power adapter, disconnect the power adapter from the computer and wall outlet, 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 learn 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.

PPP020

No power adapter was detected.

Make sure that you're using the correct power adapter, disconnect the power adapter from the computer and wall outlet, 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 learn 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 learn 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 learn 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 AASP or Apple Store to learn which service and support options are available.

PPT004

The battery requires service. The battery is not functioning normally, though you might 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.

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 learn 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 AASP or Apple Store to learn 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 AASP or Apple Store to learn 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 AASP or Apple Store to learn 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 learn 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 learn 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 learn 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 learn 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 learn 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 learn 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 learn 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 might 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 experienced with the complexities of repairing electronic devices can perform their own out-of-warranty repair. 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 page.

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