MacBook not charging from one USB-C port: what to check
Why a MacBook charges from one USB-C port but not another, how to tell a port from a cable fault, and what to do before booking a repair.
Why is one USB-C port not charging my MacBook?
Lint or debris in the port, a worn cable that only makes contact at one angle, or a faulty port. A hub plugged into that port can also block charging.
How do I tell if it is the port or the cable?
Use the same charger and cable in each port and run:
pmset -g adapterIf the adapter appears in one port and not the other with the same cable, the port is the problem. If it drops when the cable moves, the cable is.
What can I do before a repair?
Shut down, look into the port with a light, and remove lint gently with a wooden toothpick. Then restart and test again. MacBook plugged in but not charging covers the other causes.
Common questions
Do all USB-C ports on a MacBook charge?
Yes, every Thunderbolt or USB-C port on a MacBook can charge it. If one does not, check the port and cable.
How do I clean a MacBook charging port?
Shut down, then remove lint carefully with a wooden toothpick. Avoid metal and liquids.