Is this a normal fan speed and CPU temperature for an idle MacBook Pro (Retina, 15-inch, Mid 2015)

Question

Is this a normal fan speed and CPU temperature for an idle MacBook Pro (Retina, 15-inch, Mid 2015). The fact that fan 2 is not spinning worries me. I can get 'loaded' fan speeds and temps if that would be helpful.

--- CPU Stats ---

CPU temp: 52.38°C

.

--- Main Fan Stats ---

Total fans in system: 2

Fan 0 speed: 2154.0 RPM

Fan 1 speed: 0.0 RPM

.

--- Other Temp Stats ---

• TaSP Unknown 30.0°C
• Ta0P Unknown 30.13°C
• Th1H NB/CPU/GPU HeatPipe 1 Proximity 37.5°C
• Th2H Unknown 38.13°C
• Ts0P Palm rest L 26.0°C
• Ts0S Memory Bank Proximity 32.5°C
• Ts1P Unknown 24.63°C
• Ts1S Unknown 32.78°C
• TBXT Unknown 27.19°C
• TB0T Battery TS_MAX 27.19°C
• TB1T Battery 1 27.19°C
• TB2T Battery 2 27.19°C
• TCGC PECI GPU 56.0°C
• TCSA PECI SA 61.0°C
• TCTD Unknown -0.42°C
• TCXC PECI CPU 68.06°C
• TCXP Unknown 68.06°C
• TC0E CPU 0 ?? 66.97°C
• TC0F CPU 0 ?? 68.75°C
• TC0P CPU 0 Proximity 47.0°C
• TC1f Unknown 70.72°C
• TC1C Core 1 67.0°C
• TC1F Unknown 70.72°C
• TC2C Core 2 62.0°C
• TC3C Core 3 62.0°C
• TC4C Core 4 58.0°C
• TG0D GPU 0 Die 35.0°C
• TG0F Unknown 35.0°C
• TG0P GPU 0 Proximity 45.0°C
• TG1D GPU 1 Die -127.0°C
• TH0a Unknown 32.25°C
• TH0b Unknown 31.25°C
• TH0c Unknown 30.25°C
• TH0x Unknown -127.0°C
• TH0A Unknown 32.25°C
• TH0B Unknown 31.25°C
• TH0C Unknown 30.25°C
• TH0F Unknown -53.75°C
• TH0R Unknown -53.75°C
• TH0V Unknown 31.08°C
• TM0P Memory Slot Proximity 40.25°C
• TM0S Memory Slot 1 37.64°C
• TPCD Platform Controller Hub Die 44.0°C
• TP0P Unknown 40.13°C
• TW0P AirPort Proximity 36.31°C

---

UPDATE

I sent the mac off to be fixed and it turned out to be something stuck in the right fan causing it to not move! Looking at my fan speeds now: left: 3000rpm right: 2800rpm (seems consistently slower so maybe slightly damaged :L)

CPU temp is now idle at: 48°C ish

Long story short if one of your fan's is around zero then its got stuck or has broken!

Answer 1

The various temperature readings look absolutely 100% fine!

This resource (which can be filtered) clearly shows that your CPU temp at 52.38°C is nothing to worry about.

My MBP temp is regularly between 66 and 81 degrees, and my fans are regularly at 6200 RPM when my CPU usage is high.

However, the fact that your stats indicate only one fan is spinning warrants further investigation. I would run an Apple Hardware Diagnostics to see if it finds any errors. To do this:

1. Fully shut down your MBP
2. Restart your MBP
3. Immediately press the D key and keep it down until you see the Diagnostics screen appear
4. Wait for Diagnostics to finish (this typically only takes a few minutes)
5. Once complete, one of two things will appear on the screen:
   • a No issues found message
   • a brief description of any errors found plus further instructions
6. If the diagnostics test does find errors, take a note of what they are

Note: If pressing and holding the D key at Step 3 doesn't work, start again at Step 1 and, at Step 3 press and hold both the OptionD keys instead. This will try and run diagnostics from the internet instead, so you will need to allow more time for it to complete.

Let us know how you go.

Answer 2

Macbook pro shut off temp is around 105 to 110C if I read correctly. Also fans will favor silence over cooling in macbooks. So likely that second fan is not kicking in until it reaches something like 70C.

If over time you notice an upwards trend of temps, I'd look into cleaning the dust out and getting an application called Macs Fan Control to turn up the fan speeds based on temps. The downside is, the faster you run the fans, the sooner they will wear out.

Answer 3

So, I sent the mac off to be fixed and it turned out to be something stuck in the right fan causing it to not move! Looking at my fan speeds now: left: 3000rpm right: 2800rpm (seems consistently slower so maybe slightly damaged :L)

CPU temp is now idle at: 48°C ish

Long story short if one of your fan's is around zero then its got stuck or has broken!