Hello. Apple hardware test has detected an error. 4SNS/1/40000001:TN1D--1.000

Hello. Apple hardware test has detected an error. 4SNS/1/40000001:TN1D--1.000 Anyone knows what that means ? OS doesn't boot. Maybe it's hard disk error ?

It means your screwed if you're out of warranty.
That error translates to your northbridge temperature sensor is bad- BUT IN MAC "GENIUS" LAND, that means you either need a whole new logic board (a $700 part) or buy a new MacBook. On the non-unibody MacBook pros, you could have came to my store and spend $75 and had a working computer the same day- this is no longer possible on the unibody MacBooks.
WHY, WHY, WHY?
In a bold design move, Apple decided to SOLDER the thermal sensors to the logic board (along with many other components such as the video, graphics and IO), thus rendering these parts NON-SERVICEABLE by us independant technicians. Apple's reasoning is that they can "make their notebooks thinner", but why sacrifice performace for asthetics? Who cares, buy a new MacBook.
WHO NEEDS TEMPERATURE SENSORS?
It doesn't matter if your laptop is running hot or not, when a temperature sensor goes bad on a Mac, it shuts your computer down to prevent further damage. Apple was the first company to implement this "failsafe", now PC motherboard vendors are following suit after watching Apple's stock soar. What this means: Is that you could actually have a perfectly functioning MacBook except for one thing; the little guy who's sole purpose is to report whether it's not the computer is running hot or not has decided to not show up for work, so they closed up shop. If you ask me, it's the equivalent of a restaraunt closing on account of not having a dishwasher- but that's just the opinion of an ex-certified ACMT and what do I know- I'm not a "genius" or anything.

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HT201257 mac os x 10.4.11 tiger: apple hardware test has detected an error (what does this mean): 4SNS/1/40000001:VDOR

Can someone help? I did an apple hardware test and it has detected an error: 4SNS/1/40000001:VDOR
What does that mean? Can i correct it myself? how?
my computer is "tiger" mac os x 10.4.11, Processor: 2.16 GHz Intel Core 2 Duo, Memory: 2.5 Go 667 MHz DDR2 SDRAM

Thank's for answering, realy appreciate your time,
A technician had installed last year "mac os x snow leopard 10.6" (family pack) at around $49.00 - I had originaly mac os x 10.4.11 (tiger). He had changed my hard drive, added memory: 2.5 Go 667 MHz DDR2 SDRAM, processor is: 2.16 GHz Intel Core 2 Duo (he told me he had to change my hard drive probably due to a power shortage. Before he did the changes, I had done a hardware test: it gave me the same error as today 4SNS/1/40000001:DVOR, He cleaned the inside, but he did not change any sensors. What am i to do???
Not too long ago i started having problems. (probably from a power shortage, at one point. I don't know if my external back up got corrupt. so i don't want to use it. He had eraced tiger 10.4.11 and installed snow leopard 10.6.
I eraced snow leopard and installed mac os x 10.4.11 (that came with my computer).
I wanted to install mac os x 10.6 (snow Leopard) without eracing tiger (chat sites say you can do that) but it said it couldn't use my hard disk because of my memory: my info says: used: 18,78 Go on the disk, available: 446.66 Go, Capacity: 465,44 Go
So that's when i did a hardware test with the CD1 of mac os x 10.4 (tiger) and that where i got the message.
If i have a sensor problem, then i guess i'm waisting my time trying to reinstall mac os x 10.6 (snow Leopard) or am i doing it wrong. I was told i could leave tiger there and upgrade directly to snow leopard, without installing mac os x 10.5 (leopard).
Thank again

HT3964 Hardware test error 4SNS/1/40000001:TN1D--1.000. meaning

I have some problems with my Mac Book Pro 7.1,
It freezes after starts up or while functioning and I have to force the shut down.
I run the Hardware test and it reports the following error 4SNS/1/40000001:TN1D--1.000.
Could anyone tell me this kind of error what does it mean?
Thanks,
Serena.

Welcome to Apple Support Communities
This error is showing a problem with the logic board controller sensor. The only thing you can do is to take your computer to an Apple Store or reseller to have the computer repaired. Read > http://reviews.cnet.com/8301-13727_7-57352461-263/how-to-invoke-and-interpret-th e-apple-hardware-tests/
Did you run Apple Hardware Test with the charger connected? If not, connect it to the charger and run Apple Hardware Test again

Will Apple Hardware Test definitely detect RAM errors?

Hello,
Been having various problems with Leopard/MacBook. Someone suggested running Apple Hardware Test, which I did, in extended + looping mode all night (it cycled 6 times). The test turned up nothing. Can I take this to mean that whatever problems I am having are definitely software related? I am not familiar with the AHT, don't know exactly what it does, nor how I can interpret a "clean" result...
Many thanks for any advice/tips.

No indeed (just "Colin" is fine...)
My problems have mostly been documented by other people, and I have just been monitoring the discussions on these issues.
Specifically (at the risk of getting off-topic):
1) inconsistent shared server behaviour: I have 3 other macs at home - an iBook and a G4 MiniMac running Tiger, and a G4 tower, also running Leopard - and most of the time, the tower doesn't show up at all, but I can connect to it via CMD-K, the MiniMac shows up in the sidebar, but won't let me connect, and the iBook, when it is running, behaves normally. Oh, screen sharing doesn't work either: it tries connect but hangs (except for the iBook, which works). I could connect to all four quite normally after upgrading to 10.5.0, using the sidebar icons. Everything worked fine until sometime after the 10.5.1 update, when suddenly everything went pear-shaped. Nothing has changed in the configs of the other machines, and the iBook and the MiniMac are identical in terms of software config (but behave differently as regards this problem?!?)
Closing Airport and reopening it makes the icons reappear in the sidebar (all of them, G4 tower included), as does relaunching the Finder, but doesn't change the behaviour: I still can't connect. When I try to use the sidebar icon for the tower, it disappears (the icon...)
As far as I can tell, trying to operate shares from the G4 tower works as Apple intended (although I admit I have not exhaustively tested every option, as I don't have unlimited time...)
2) Lost my printer connections, both at work and at home. I managed to reestablish them at work, but I tried so many things that finally I'm not sure what actually worked. No dice at home (shared printer on the MiniMac... same problem as (1) I guess.)
3) the dreaded Keynote spontaneous reboot problem (I placed a reply about that last night here:
http://discussions.apple.com/message.jspa?messageID=6630702#6630702
4) diverse weird things, like
4a)iCal which had doubled all my events the last time I opened it. I had to manually delete one copy of every event I had entered, whereas I made these entries several weeks ago, and had consulted them many times... I'm thinking this is perhaps a result of the brutal reboots caused by (3)? Having deleted all the doubles, iCal seems to be behaving normally again.
4b)screen resolutions on my slave screen suddenly failing to select properly. I move my MacBook between two different external monitors, one at work, one at home, and their resolutions are different. Initially the MacBook had no trouble detecting and correctly setting the resolutions for the two screens, then suddenly my home screen went weird on me, and required a manual reset. Again, this was a once-off, and does not seem to be repeating (yet).
4c)sluggish performance with some apps that are normally quite snappy, like Firefox, which seems to hang a lot loading pages, Keynote (saving is often painfully slow), and indeed, trying to copy a 250Mb file from the tower to the MacBook via Airport (having connected using CMD-K) said it was going to take 33 hrs, which I thought was a bit rich...
4d) hot-swapping a usb pin for a keyboard+optical mouse receiver from the tower to the MacBook sometimes causes something inexplicable to happen to the MacBook's keyboard: both the Caps and the NumLock LEDs come on, and the keyboard has jumped into some config other than what it is normally in (French). I have not been able to determine what the keyboard actually thinks it is when this occurs (3 times now). The command keys (ctrl, alt, cmd) do not appear to work at all. Rebooting corrects it.
All up, pretty irritating, and a huge time waster, as you can well imagine. I stuck a bit of a rant on the discussions the other day in a moment of intense frustration, which got zapped by the moderators (probably not unreasonably!), but not before someone replied suggesting that it might be bad RAM, hence my questions here.

Apple hardware test gives me this code: 4SNS/1/1C0000008:TN1D--124

4SNS/1/1C0000008:TN1D--124
this is the code i get . I runned the test because my laptop is a macbook pro 13 2.4ghz mid 2010 with mac os x 10.6 and it is getting a reurrent problem that is that the fan starts to go faster than usual after 1 minute of starting up the laptop and the cpu load gets up to 99% of usage and the system becomes slow like the lag becomes extreme.
The laptop suffered a waterspill like 3 months ago but I got it fixed only that the battery is no longuer working , not even a new one i bought. Also a memory slot died and the microphone isnt working even if its new. I also got the dc in board replaced but the one i got was a 2008 model but seemd to be workign fine until last new years eve when it got back to the lag.
Can you tell me if its a faulty temperature sensor on the logic board that causes the fan to accelerate or as a laptop repair guy told me it is the hard drive. Could it be the hard drive? Would i get a hard drive kind of error if it was that? i doubt its the hard drive. the guy wanted to sell me a new hard drive so maybe he new what the problem is and wanted to make me think its he hard drive so i buy a new one from him.
If its some temp sensor then I dont get why i get a normal temperature reading using a program i got that measures it , it marks 38 Celsius, which seems normal temp to me.
Also the laptop is receiving 16.6 v at the dc in pin connectors after i checked it with a voltimeter.
So, what do you think the problem really comes from? Can it be repaired?
thank you

Hi eww thank you for answering.
I have installed Istat pro and all temperature sensors measure ok ( Celsius )
HD 30
CPU 36
Heatsink B :34
NorthBridge: 29
Are there anyother sensors.
4SNS/1/1C0000008:TN1D--124
This message indicates the sensor that is wrong? I have no apple care. Where can i get someone tell me which sensor is wrong? I live in a small city ( Ensenada )north of mexico and there are no oficial apple repair specialists around here!
Thank you !

Bluetooth failure - hardware error 4SNS/1/40000001:TB1T-0.000

I was installing updates in my computer and suddenly the bluetooh icon started to fail, I noticed that a red led was on (in the mic input), but after restarting it was off, I tried the hardware test and I got the error 4SNS/1/40000001:TB1T-0.000, so I also tried:
- Reseting PRAM & NVRAM
- Reseting SMC
- Deleting the com file of the bluetooth in the Library folder
But the hardware error is the same, I also noticed that when I test the stereo sound the left speaker volume is very low.
My computer is still with guaranty so I'll request the replace of the bluetooth chip and speakers.
Don't waste your time if you did the hardware test and you receive this error message, none of the soft advices you'll find in this forum will work, just replace.
What I'd like to know if it is better to send the computer or the replace the chip by myself, I saw some youtube videos and it looks very easy, and honestly I don't like how the technical service treats the computers.
Thanks in advance for the advice,

Dear all, after some reboots, and honestly I don´t know which of the previous soft advices was, but my bluetooth is now working.
Just as a extra comment, the mighty mouse bluetooth is the best i ever had, works for Windows Vista better than in OS X. This genius idea of having the right and left button options in one button is very awesome.
Apple 1 , Microsoft 0

Hey! so i was do a AHT on my macbook pro retina and their was a error 4SNS/1/40000001:1DOR-0.000 need help thanks!

hey! so i was do a AHT on my macbook pro retina and their was a error 4SNS/1/40000001:1DOR-0.000 need help thanks!

Welcome to Apple Support Communities
It looks like you ran Apple Hardware Test without plugging the MacBook to the charger. It's normal to see an error if you run Apple Hardware Test without your Mac plugged.
Plug the MacBook Pro to its charger and run Apple Hardware Test again

Noisy fans, AHT error 4SNS/1/40000001:tgod-1.000

Hello, i run an AHT cause my old imac 24' fans came suddenly noisy. (snow leopard)
(I previously tried reset PRAM..., shut down/wait/unplug..., check apps proc%) ...
AHT returns this error : 4SNS/1/40000001:tgod-1.000 What does that mean? What should i do ?
Thanks for your help !

Means you have a defective sensor. I think it may be for the optical drive. That's what makes the fans run at top speed. Please make a Genius Appointment and take it in for service.

Apple Hardware Test error 4SNS/1/40000001:ID0R-0.000 on Retina MBP

Getting the above error on my 3-day old retina MBP with 16gb RAM and 768GB flash storage. I had loaded Chrome, Firefox, VMWare Fusion, Office 2011, and all the Apple updates as of 7/3/12.
My issue may be related to similar issues I've seen on these boards, relating to sleep or wakeup causing the intermittent crash. Machine has also crashed (kernel panic) 2 times. Genius Bar employee downplayed the AHT altogether, saying it's a false positive since his more advanced tool reported no errors. They then kept it for a day, to run a "loop test," which also came back with no errors. Then, because apparently it is easier to re-load the OS rather than actually diagnose the issue, they re-loaded my OS clean. (Yay, now I can re-load all my apps, copy 200GB data back on, and THEN we'll see that it is a hardware problem.)
Tomorrow I'll pick it up from Apple and run the AHT again. If it errors out again, I'm not sure what to do...

One note I had neglected to mention is that the bar/band immediately above the keyboard gets very, very hot. Yes, I know that is where the fans are. However, all 12 of the MBP's at the Apple store did not have this extra-hot band, and those are on all day. My little Safari & Mail apps should not cause an overheat situation, on a functioning machine. Apple blamed Google Chrome for the crashes, downplayed the overheating, and downplayed the AHT results.
Update: I went to the Apple store today and took a look at the notebook. They ran their tests, had re-loaded the OS, and performed an undisclosed hardware repair. (They were helpful but vague as to what the actually did on the machine, hardware-wise.) They said their advanced tools & extended Loop Test did not indicate any errors or problems. While still at the store, I ran another quick test with the Apple Hardware Test, which came back with the same 4SNS error as mentioned above. I asked for a refund, which they approved (except they said I have to come back Monday since I bought the machine from Apple Business.)
When I got home, I ran an extended test with the Apple Hardware Test and got a *diffferent* error this time: 4HDD/11/40000000:SATA(0,0).
It's seems strange to me that the AHT shows 2 different errors, and yet the Genius' "advanced " tools find no errors. Thankfully, I will return this one (eventually) get a new unit. Thanks to everyone for helping. --Peter

Apple Hardware Test Problem Detected

I did an Apple Hardware Test, (where you restart your computer while holding down D and Apple detects if you have an problems on your computer). And I was notified that I had this problem: "4SNS/1/40000001:1DOR-0.000" What does this mean? How do I fix this problem?

Help here > Mac notebooks: Apple Hardware Test may report SNS alert when power adapter is not connected

MBP 13" - 7,1 error: 4sns/1/40000000:tn1d-104.000

My computer fan runs constantly even when just using Firefox and the macbook also runs very hot. I've done a lot of audio recording in the past and the noise is always a problem. Also, last week I installed a couple programs to livestream video and hope I didn't fry something because my CPU was running over 100%.
The worst thing is that yesterday while I was watching a youtube video I began to see a bunch of horizontal white lines going back and forth across the entire screen. It didn't come back after a hard reboot but...
This morning I ran the hardware diagnostic test and it returned the following error message:
4sns/1/40000000:tn1d-104.000
Does anyone know what might be causing this?
Model Name:
MacBook Pro
Model Identifier:
MacBookPro7,1
Processor Name:
Intel Core 2 Duo
Processor Speed:
2.4 GHz
Number Of Processors:
1
Total Number Of Cores:
2
L2 Cache:
3 MB
Memory:
8 GB
Bus Speed:
1.07 GHz
Boot ROM Version:
MBP71.0039.B0B
SMC Version (system):
1.62f7

The fan in the MBP will run high as a default if the sensor has failed (6200 rpm). Did you tell the technician about the AHT error message? Did he take any corrective action or tell you specifically what options there were to rectify the situation?
Based on your reply, I am concerned that you may have gotten a short shrift.
Ciao.

Error 4SNS/1/40000001:ID2S-0.000

I have an issue with cpu fan running out of control.
I ran Apple Hardware Test and it gave me that errot number.
Does anyone know anything about it ?
Where can I find meaning and action plan ?
Thanks

Most likely a failed device temperature sensor. As noted, contact Apple Service, iMac Service or Apple's Express Lane and get it fixed.

Apple Hardware Test detected an error code... now what?

I ran AHT and I got this message:
Alert! Apple Hardware Test has detected an error
4M0T/1/40000003:HDD-1424
Can anyone shed some light on this?
My early 2008 iMac has been having issues with the spinning wheel when opening and using applications. I can't seem to pinpoint when it happens, but many times I will have to shut down or power the machine off to stop the wheel of death from spinning.
Any help would be greatly appreciated.

bump... any one else?
I was able to boot the machine up today and I am noticing the top of the machine is getting very hot. Could this be the overheating issue I have read about here in discussions?
I was also able to transfer files to an old eMac, so I am backed up, but that transfer slowed after the machine warmed up. I would shut the iMac down and let it cool... it then transfered great while cool but slowed when it heated up....
I am taking it in to a local authorized repair shop Monday morning..... just hoping for some more thoughts before then.
Thanks!

Ran Apple Hardware Test from USB Install Drive on new MBA, Got this error

Last week I got the fully loaded 2010 MBA 13" (2.13ghz/4gb/256gb).
It's just perfect, I have no problems with it.
On a whim, I ran the quick Apple Hardware Test using the included USB install drive (took just a few minutes) and it came up with this:
Alert! Apple Hardware Test has detected an error.
4SNS/1/40000001:IDOR-0.040
Screenshot:
http://img811.imageshack.us/img811/9800/2010macbookairhardwaret.jpg
Any ideas on what that means? Hopefully it's a false positive. I'm running the extended test right now, which will take more than an hour. Will report back.
Anyone seeing anything from the hardware test?

jonm8 wrote:
Last week I got the fully loaded 2010 MBA 13" (2.13ghz/4gb/256gb).
It's just perfect, I have no problems with it.
On a whim, I ran the quick Apple Hardware Test using the included USB install drive (took just a few minutes) and it came up with this:
Alert! Apple Hardware Test has detected an error.
4SNS/1/40000001:IDOR-0.040
Screenshot:
http://img811.imageshack.us/img811/9800/2010macbookairhardwaret.jpg
Any ideas on what that means? Hopefully it's a false positive. I'm running the extended test right now, which will take more than an hour. Will report back.
Anyone seeing anything from the hardware test?
I think this will solve your issue:
http://support.apple.com/kb/TS3578?viewlocale=en_US

Apple hardware test error 4SNS/1/40000000: TB1T-128.000

I have just bought a used Macbook unibody 2.4, 6GB DDR3, 500GB 7200
And did a apple hardware test which showed the error "4SNS/1/40000000: TB1T-128.000"
What might it mean and how serious it might be?
I tried to google it and found out but not successfully.
Could anyone help with it?
Thank you.

It's a sensor error. We have no access to the "translation" of hardware test diagnostic messages. You'll need to take the computer to an Apple service center.

Hello. Apple hardware test has detected an error. 4SNS/1/40000001:TN1D--1.000

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