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2018年7月に発売された、モデル番号{A1989 / EMC3214}のMacBook Pro13インチモデルにはクアッドコアi5と i7 を搭載しており、グラフィックにIntel Iris Plusが統合されています。

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Right fan is running at full speed, PPF003 & PPF004 Error Codes.

Hi!

Something happened to my MacBook recently. The day before the incident, it was working normally, I was browsing the internet on it for a few hours. The next day, when I turned it on, the right fan started running at maximum speed. I reset the NVRAM and SMC, but it didn't help. I ran Apple diagnostics and it showed errors PPF003 & PPF004, so I decided to replace the right fan. Unfortunately, the replacement did not help. I also changed the thermal paste just in case and checked if the fans were clogged, but everything is in good order. Additionally, I unplugged and reconnected the keyboard connector. I tried to control the fan speed using the Macs Fan program, but the speed is locked at maximum (8000 rpm) and cannot be reduced in any way. The left fan can be controlled normally. I checked the temperatures and in idle, they are higher than usual, sometimes even above 60-70 degrees Celsius, whereas before I used to see around 50 degrees.

One interesting phenomenon I observed is that when I press the keyboard cable connector harder, the right fan starts running slower or even stops completely for a second before returning to maximum speed. Therefore, I plan to replace this cable as well.

The laptop has not been dropped or exposed to any water damage. Is it possible for something like this to happen overnight? Or is there anything else I can check before ultimately sending the MacBook to a service center?

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great information

さんによる

I have the same problem(( but having a MBP 16 2019 A2141

Do you need to replace the whole keyboard or there is a way of replacing keyboard cable only?

さんによる

You likely only need the cable. But if you had a liquid spill it’s likely more than the cable.

さんによる

Sounds promising but could you point me to the part number or the name of the cable I need? I found only the whole keyboard part but not the keyboard cable(

Did you mean a touchpad cable?) this one I found

さんによる

Probably you already know by now, but the 16" model A2141 appears to have a non-removable cable.

On the 13" model that you're commenting on, the cable is replaceable.

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Definitely replace the keyboard cable. It’s more than likely your problem. I was going to suggest it before I even saw you mention it. The fan signal on these models is transmitted through the keyboard cable to the board (As I’m sure you noticed when you replaced the fan, the fan connector is actually on the keyboard’s circuitboard.

It’s certainly possible for this sort of thing to just occur. It’s not a super common problem in my experience, but it’s not unheard of. Sometimes a cable just goes bad. For any number of reasons. I will cross my fingers, but if it’s not a fan, and it’s not the keyboard cable, it’s probably a board issue. Which is a much more expensive repair. And adds additional complications.

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I took my MacBook to the service, and it turned out that it was the keyboard that was causing the issue.

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WISE さん、ありがとうございました！
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