Chosen Solution
Hi @mayer, I have this problem too, macbook pro Retina Late 2012 A1425. Have you fixed this error yet? Thanks. Update (06/22/2021) Hi @dan , @mayer , Macbook Pro Retina Late 2012 - A1425 “[06/22/21 08:46:46] Speaker: Speaker Valid Vendor ID Test (test #5) - Speaker Valid Vendor ID Test
- Verifies the speaker vendor-id is valid, if it’s ‘?’ it’s not supported, if it’s 0xFF there is a problem mathing id’s. [08:46:47] ERROR – 4 [Valid Vendor ID Test Fail.] – TEST FAILED [06/22/21 09:38:12] Thermal Interface: Processor:Processor0 (test #4) - TIM Test 75 percent GB
- Check that CPU heatsink is properly attached, using product spec theta dh + 75 percent guardband. [09:39:06] ERROR – 255 [Unknown result-code 0xff] – TEST FAILED” Fan max speed ~8000 rpm My Macbook has 1 screw missing as shown in the attachment, and 1 speaker on the left side of the picture is damaged; My Macbook fan runs max 8000rpm; I don’t know if it’s because of these 2 errors?
You do need to be careful with ASD as you need to use the correct one for your system. For most folks (and even me) find the onboard diagnostics offers a good enough hint. Sadly, Apple broke it with the newer firmware and even fully disabled it on the 2012 systems which is likely why you had used ASD here. I would start off replacing the speaker for sure! That resolves your first error SMC services will pump the fans up when either a thermal or current/voltage sensor reports something is a miss. Here the Heatsink thermal sensor is reporting a problem. The missing screw is one of the heat sink screws but it shouldn’t be the cause of this error. After replacing the bad speaker I would run TG Pro as it will allow you to see which of the sensors was in trouble.
