help with iMac crashing - PPM002

[Queen of Spades]

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!

 

[TwoH]

Chances are it is a fault with the RAM.

 

[Queen of Spades]

Chances are it is a fault with the RAM.

That would be rad. I will give that a try and report back. Thanks!

 

[Queen of Spades]

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.