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The larger of Apple's MacBook Air laptops featuring dual microphones and 802.11ac Wi-Fi connectivity.

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I’m having lots of errors! Diag codes PPT002, PFM006, PPN001.

I am facing a similar problem with my MacBook Air 2013. When I ran the diagnostics I got reference codes PPT002, PFM006, PPN001.

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Here are the screenshots of TG Po and CoconutBattery for my machine.

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Any help is much appreciated.

MacBook Air with hi-speed fans and pfm006 ppn001 message

Update (02/17/2023)

Here you go. The battery warning is gone now, but the other two error still remains.

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Update (03/05/2023)

Opened logic board. Here are some pictures.

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You need a new battery too! MacBook Air 13" (Late 2010-2017) Battery and here's the guide Sostituzione Batteria MacBook Air 13" metà 2013

As you can see the cycle count is over the expected cycle count of 1k Determine battery cycle count for Mac notebooks besides a battery life is about 4~5 years which clearly long since passed as this is the original battery!

FYI: I use my 2011 15" MacBook Pro system (has a 2012 logic board now) every day doing quite a lot, I'm on my 8th battery, just installed. I get about three years of life per battery.

Your errors are related to a old battery. Let’s build a mind model so you can see what’s happening. Your battery is like a toilet tank which holds water. A fill system and the flush! Once the tank is at the volume of water the fill system shuts off only to come alive after you’ve done your business. But over time the rubber seal which holds the water from exiting rots out so now the water leaks out! At some point the fill system engages topping off the tank. But over time the seal keeps breaking down before you know it the fill is constantly running! Your water bill shows the effect if you’ve spent the time monitoring it.

So how does this apply here?? Power is no different! The battery is the tank and the charger is the fill and your logic board the flush!

But unlike water, power creates heat! Your charger and battery heat up as the power runs through. The logic board senses the heat or the low battery voltage and responds! Pumping up the fan.

Immagine MacBook Air 13" (Late 2010-2017) Battery

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MacBook Air 13" (Late 2010-2017) Battery

$69.99

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17 Commenti:

I am totally convinced that this machine needs a new battery but I am afraid even that will not resolve the lagging issue.

I have to now decide on whether to buy a new machine as this one is quite old or to invest in replacing parts of this one.

da

@djoker27 - I know! I know! How could the issue be the battery?? Trust me it IS!

A weak battery causes the system to heat up as the charging logic is trying to push power into the battery but that power is not being stored all its doing is turning into heat! As the systems SMC logic sees that heat it goes into CPU Safe Mode, lowering the CPUs clocking and ramping up the fan trying to save your system. Once set you need to clear the SMC latch when you replace the battery.

Look at it this way if you get an IFixit battery you can return it if you still have issues.

da

Hi Dan, I removed the battery and now using the machine without the battery. Still, fans running at full blast, high cpu% by kernel_task and the system is still laggy.

da

@djoker27 - Yes that is expected! You removed access to the battery sensors from SMC so SMC going into CPU Safe Mode ramping up the fan and lowering the CPUs clocking.

So while you expected a difference you got none! As the focus is the battery.

With a weak or bad battery will offer the same symptoms as not having the battery installed as SMC is dependent on access to the sensors within it.

da

@danj Thanks a lot for all the explanations. Ordered the replacement battery. Will let you know how this goes.

da

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Manuj sarà eternamente grato.
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