Help Decoding Apple Hardware Error Code: 4MOT/4/40000003-HDD-1319
I have a Late 2009, 27" iMac. It has been a solid machine and served me quite well over the years. Finally over the last year, I started having some issues with it. Most recently it is failing to boot up.
It plays the chime, gets half-way through the progress bar, then glitches out to a white/gray screen. Then it sits there for a few minutes and then tries to reboot itself. After trying a few possible fixes, such as PRAM and SMC reset etc, I decided to run the Mac Hardware diagnostics. That gave me the following two errors.
Quick Test: 4MOT/4/40000003: HDD-1276
Extended Test: 4MOT/4/40000003-HDD-1319
I am trying to see what these errors mean. I know that a 4MOT error has to do with fans. And the HDD part makes me think this has to do with the Hard Disk fan. What I am trying to figure out is the numeric part of the error code. Is it telling me that the fan unit has stopped working, or if this a temperature sensor issue/something else.
I am hoping someone with access to these codes, or prior knowledge about them can help decode these for me.
Is this a good question?