Ошибка ppm002 на макбуке что делать

Hi everyone. I have a late 2013 macbook pro. It has worked great, but it won’t let me upgrade to OS Sierra. I currently have el capitan. When I run diagnostics it says it won’t let me upgrade because of code PPM002. This means I have a memory stick problem, but it doesn’t seem right. If that is the case then why can I install the OS mavericks that came with the computer with no problem, and I can install El Capitan from my time machine backup with no problems.

Does anyone have any ideas as to what could be happening? Do I truly have a memory problem. My computer seems to run flawlessly, but once in a while I do have an occasional webpage that doesn’t seem to run, but I click again and then it runs fine. This barely ever happens, but it is the only thing that might support the memory problem. I would appreciate any suggestions.

MacBook Pro (Retina, 15-inch, Late 2013),

iOS 10.1.1

Posted on Feb 28, 2017 9:38 PM

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I’m on High Sierra, MacBook Pro, 2017. For some reason it wouldn’t finish logging me in and turn the laptop off today’s morning.

What I’ve tried so far:
First aid says everything is OK, while giving error «ppm002» in diagnostics. I’m trying to upgrade to Mojave in hopes that it will fix it. While choosing a disk to install on and after typing the password — the disk disappears from the choice menu, and I can’t proceed with installation.

Any ideas? I’d be glad if there is a way to save information from the ssd.

asked Mar 21, 2019 at 10:06

Error PPM002 points to a memory (RAM) issue. See Apple Diagnostics: Reference codes for more info.

Edit #1: I’ll expand a bit — I had a 2014-era iMac in for repair early last year because it wouldn’t update to High Sierra from a seemingly working Sierra, and in the end it turned out to be faulty memory. Whether this was due to a specific way that macOS accessed the RAM during an install, I don’t know. What I do know is that it was faulty RAM and replacing it solved the problem. There was a PPM error, though I don’t recall the exact number.

Your MacBook Pro (assuming Mid 2017 model) has soldered RAM, which means if it is faulty, then it’s going to involve an Apple repair or replacement. Unfortunately it’s not possible to just pop the RAM out and replace it.

Some things to try:

run Apple Hardware Test to do a full check of your RAM. Any Apple authorised technician will run this as part of their tests, so it’s useful to get something concrete.
use another Mac to make a bootable High Sierra (not Mojave) USB stick, take a full backup of the drive using Disk Utility. The bootable installer (which doesn’t actually require you install anything to the hard drive) is more lightweight on RAM use, so you have a good chance of getting your data backed up. If you’re using Time Machine and it’s up-to-date, disconnect that for now so you know you have a relatively safe backup if your MacBook does need to be repaired/replaced.

answered Mar 21, 2019 at 17:13

Pete CooperPete Cooper

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My Macbook Pro’s Apple Diagnostics currently reports PPM002, PPM003 and PPM004 error codes, which are associated with the on-board memory.

Apple’s page on this topic is not illuminating.

Is there a technician’s or engineering manual somewhere that documents these?

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My Macbook Pro’s Apple Diagnostics currently reports PPM002, PPM003 and PPM004 error codes, which are associated with the on-board memory.

Apple’s page on this topic is not illuminating.

Is there a technician’s or engineering manual somewhere that documents these?

bmike♦

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asked Jun 30, 2020 at 19:52

pruspilapruspila

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Заголовок сообщения: MACBOOK AIR (A1466 820-00165-A) ошибка памяти

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Всем доброго времени суток и удачных ремонтов. Подскажите пожалуйста — есть MacBook Air A1466 EMC3178, 2017 год. Была паника ядра, диагностика выдала ошибку PPM002, что указало на ОЗУ (было установлено 4 модуля ELPIDA по 2Gb каждый). Взял с донора (такая же плата, только 15 год) 4 модуля Samsung k4e6e304ee-egce, по 4Gb каждый. Поставил, страпы поменял согласно схеме — RAMCFG0-3, все проверил несколько раз. Сейчас такое поведение — при включении загорается яблоко, 3 секунды горит и ноут просто вырубается. Может что-то упускаю? Есть в схеме ещё CPU DRAM CFG Chart, думал ещё какие-то страпы надо выставлять — всю схему перерыл, не нашёл ничего. В режиме диагностики напрочь зависает после подключения к WIFI. ОЗУ 100% рабочая, плата при мне полностью запускалась.

Последний раз редактировалось azazel1982 18 мар 2021, 14:42, всего редактировалось 1 раз.

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Заголовок сообщения: Re: MACBOOK AIR (A1466) ошибка памяти

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Сорри, 820-00165-А
По спецификации его на сайте everymac максимально на этой модели 8Gb, но максимально поддерживается процессором — 16. Интересно, что это за плата, с которой я снял — знаю что с ноута с банка, может кастом какой? Есть ли успешные случаи заставить на этой материнке работать 16Gb? Оно же даже прописано в схеме..

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результат то какой?

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820-00281 Wont post, PPM002 error

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tcampbell34
Start date

Aug 11, 2020

Hello. I got a 820-00281 board that looks very clean.I do not find any damage on the board at all. This macbook turns on, but will not boot to anything. When I try to start normally, it boots maybe about 40% and then turns off. If I hold the option key, The internal SSD does show up and if I try to boot into a Catalina installer, it makes it to the part where the grey background shows up on the installation screen, but then the computer turns off again. Same thing if you try and boot to USB copy of OSX. I was able to run diagnostic on this and it fails with error PPM002 «There may be an issue with a memory module». I then booted the board using a USB stick with memtest on it and ran the test and that also seems to fail. It stopped at 90% of the test with only 33% pass and over 10,000 errors. Sounds like a memory issue so would you recommend trying to reflow the ram chips or something else?

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Looks like RAM issue, but can also be CPU problem.
You can try to reflow DDR chips for test; be aware, no more than 180-200 degree, no need to melt the balls.

Did you try Windows, or Linux Live USB?

I tried to reflow ram chips at 200 degrees Celsius for 30 seconds each chip, but no change. Tried to boot into windows from and USB drive, and it actually made it to the login screen. As I was typing my password to login, it crashed on me with stop code MEMORY_MANAGEMENT. Is there anything else I can try with this one?

2informaticos

Clean ME region.
If still the same, try full known good working BIOS; clean ME, of course.

I had already tried that before posting but it did not help. I was checking some measurements on the board in diode mode and found that PP1V5R1V35_S0_GPU_MEM measures .031 in diode mode on this board and .165 on a good board. I still have 1.4 volts on that line, but the low diode mode reading makes me think UA400/450, UA500/550 are bad. Question I have is can these chips be replaced, or do they have some kind of firmware? I have the tools to do so, and I found a seller on Aliexpress that sells them. Samsung K4G41325FE-HC28

Hi, by any chance could you let me know the diode mode readings of:

PPVCC_S0_CPU
PPVCORE_S0_GPU

on your good board? I dont have one to test.

Thanks.

PPVCC_S0_CPU — 0.003 (5.5 ohm)
PPVCORE_S0_GPU — 0.001 (2.3 ohm)

2informaticos

«PP1V5R1V35_S0_GPU_MEM measures .031 in diode mode on this board and .165 on a good board.»
Both boards have the same GPU type and VRAM size?
If yes, this could be sign of bad GPU, or VRAM chip.

Yea both boards are identical except that this one has Samsung ram and my other board has Elpida ram, but they are both 4GB chips. Was going to try removing each chip one by one and then seeing if the diode mode value goes up. If I do find that only one of the chips are bad, can I replace that one with a Elpida ram chip even though the other 3 are Samsung?

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«Was going to try removing each chip one by one and then seeing if the diode mode value goes up»
You’ve forgot UA000…

I started working on this board again because I got a donor board in that had a RAM chip still on it. 0.031 is a good diode mode measurement for PP1V5R1V35_S0_GPU_MEM. I confirmed this with a few other boards. I knew the issue was with one of the RAM chips so I replaced one at a time and tested to see if it fixed the error. After replacing U2500, it passed AD and I was able to boot into recovery and install Catalina on the drive. Everything seems to be working fine now. Thanks.

2informaticos

You’re welcome, good job; not easy at all…

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820-00281 Wont post, PPM002 error

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