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
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
2
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?
bmike♦
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asked Jun 30, 2020 at 19:52
pruspilapruspila
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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♦
226k78 gold badges397 silver badges868 bronze badges
asked Jun 30, 2020 at 19:52
pruspilapruspila
431 silver badge4 bronze badges
1 Answer
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Macbook Logic Board Repair Questions
820-00281 Wont post, PPM002 error
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Thread startertcampbell34
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Start dateAug 11, 2020
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#1
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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#2
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?
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#3
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?
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#4
Clean ME region.
If still the same, try full known good working BIOS; clean ME, of course.
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#5
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
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#6
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.
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#7
PPVCC_S0_CPU — 0.003 (5.5 ohm)
PPVCORE_S0_GPU — 0.001 (2.3 ohm)
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#8
«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.
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#9
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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#10
«Was going to try removing each chip one by one and then seeing if the diode mode value goes up»
You’ve forgot UA000…
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#11
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.
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#12
You’re welcome, good job; not easy at all…
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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
OS Sierra can’t upgrade PPM002
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
2
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
5762 silver badges10 bronze badges
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HadrianJ
PPM002 Fault (Macbook Pro 2015)
So recently my Macbook has begun to crash frequently (length of time between crashes varies, as does the program responsible for the kernel panics). I have tried the Apple Hardware Diagnostics tool, and it told me there may be a problem with memory module PPM002. If there is a hardware fault, what kind of repairs are necessary? How much would an Apple Service Provider charge for it?
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#1
I have a 2013 27″ iMac that has been upgraded to a 1TB SSD and 32GB of RAM approximately 3 months ago.
As of a few weeks ago, I’ve been experiencing kernel panics and shutdowns. I ran the diagnostics test and it came back with a PPM002 error, and additional PPM003 and PPM004 errors.
According to google, this means «onboard memory» problem. Is that the RAM or something related to the motherboard? Just trying to troubleshoot on my own here as it’s out of warranty. I’m comfortable with servicing most things myself (I performed the RAM and SSD install), but could use some help identifying what could be wrong. Worst case scenario I could have Apple diagnose for me, but I’d rather figure it out myself.
Thanks guys!
Last edited: Oct 10, 2019
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#3
Chances are it is a fault with the RAM.
That would be rad. I will give that a try and report back. Thanks!
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#4
Just wanted to update — I replaced the RAM with 4 matching 8GB OWC sticks and it’s now passing diagnostics with no errors. Hopefully that’s it! Thanks again.