What year? In North America, the transmission would be under warranty for 5 years or 60,000 miles.

Are any warning lights in the dashboard flashing or on steadily when the car is running? In particular, is the Check Engine Light, the AT Oil Temp light, or the "Sport" light, lit?

Are you sure the code is P0175? I don't think that's a transmission code. Perhaps it's P0715, which is for the turbine speed sensor. If that's the case, the "fail safe" (aka "limp home") condition is that the transmission will not shift to the high gear.

"Turbine sensor 1, 2 abnormal
Shifting control is performed without using turbine sensor values to maintain minimum
mobility. 5th speed and sports shift mode are inhibited."

How do you know that the sensor is good?

 

fluid?

 

Any chance you over heated the car towing with it at some point in the past? First thing to go on a friends AT in his subaru were the taller gears when he cooked the AT towing a heavy trailer up a long hot climb.

 

Hello Thank you for the replies and sorry for my bad English !!!

My car is from 11.11.05 .It's 7 years aging but only 26000miles.

I buy this car from a subaru garage, they d'ont find the problem and having no times for repair . i buy this car for cheap.

I think the sensor is good while the garage as checked 2 weeks this problem..
I see new gasket under the transmission, perhaps the garage has checked the valves assembly.

I never get the AT temp alarm light.
Oil level is good

I get Check Engine Warning only when i go for the 5th speed with the transmission warning light, Sport light blink.



P0715 turbine speed sensor

sometimes i get

P0734 4th incorrect ratio.

When i go for the 3th speed to the 4th nothing happens...only the led digit indicate "4"when i go for the 5 th speed the engine revving free like neutral and I get multiple errors light on dashboard.

After ressetting, When i stay in manual mode between the first and the 3th gear, i get no error and the car work fine in this range

 

Du kommer att behöva ansluta en scan tool till bilen för att titta på data från turbinen och bakre hastighetssensorn. En dålig mark kommer att orsaka problem. En brist sensor kommer att orsaka problem. En dålig transmissionsstyrmodulen kommer att orsaka problem.

Hoppas jag fick det rätt.

(You would need to connect a scan tool to the automobile to look at data from the turbine and rear speed sensor. A bad ground will cause issue. A failing sensor will cause issue. A bad transmission control module will cause issue.

Hope I got that right. )

 

Du kommer att behöva ansluta en scan tool till bilen för att titta på data från turbinen och bakre hastighetssensorn. En dålig mark kommer att orsaka problem. En brist sensor kommer att orsaka problem. En dålig transmissionsstyrmodulen kommer att orsaka problem. (...)

This is swedisch, but he is from Switzerland, not from Sweden. In Switzerland people either speak, german, french or italian

 

thank you

thank you i think the sensor is ok the garage as replaced this sensor and checked lines but they forgott maybe the earth

I go recheck this sensor anyway with the scope

I think the INPUT CLUTCH doesnt not operate at the end... Its must engage for activate the 4th or 5th

 

Med denna kod, kommer det flyttas inte 5. Dess en skyddsåtgärd och kommer bara att flytta så högt som de tillgängliga uppgifterna medger. Förmodligen därför det inte kommer att flyttas in till 4.

With that code, it won't shift to 5th. Its a protective measure and will only shift as high as the available data will allow. Probably why it won't shift in to 4th.

 

Med denna kod, kommer det flyttas inte 5. Dess en skyddsåtgärd och kommer bara att flytta så högt som de tillgängliga uppgifterna medger. Förmodligen därför det inte kommer att flyttas in till 4.

Cardoc- pretty sure the OP said he was in Switzerland, but you appear to be posting Swedish translations.

Most Swiss speak either German or French, and many speak both.

That said, I always thought the Swedish Chef could use some help in the garage...

 

I speak french and German. Swedish seem close to German

 

 

That does show that in 4 and 5 the input clutch is engaged. But the clutch is controlled by the transmission control module (TCM), and with the P0715 code, the TCM will not will not engage the input clutch.

While codes, such as the P0715, can sometimes be misunderstood, and mis-lead, as cardoc noted, I think you do have to check to see if there is a signal from the turbine sensor. Some scanners can read the transmission signals, including the turbine sensor.

Perhaps look at http://www.subaruoutback.org/forums...5-parts-accessories-performance/39426-freessm-complete-access-your-ecm-tcu.html. Although I'm not certain they would work with your European model of Subaru, I would think FreeSSM and Romraider Logger should be able to communicate with your 2005's 5EAT.

 

little question

I jacked up the car...
It is normal when i turn a front Wheel in N the another front wheel dont turn ? The contact key is off...

 

It is normal when i turn a front Wheel in N the another front wheel dont turn ? The contact key is off...

With the transmission in Neutral, there's nothing to prevent the front differential pinion shaft from turning. Normally, if the pinion shaft doesn't turn, the other front wheel will turn, in the opposite direction. But if the pinion shaft can turn, either the shaft, or the other wheel can turn -- it depends on which is more, or less, free to turn.

Try the same thing with the transmission in Park. When the transmission is in Park, the pinion shaft should not turn. See if the other front wheel turns.

 

5eat problem

I have a new observation for my 5eat. When I shift from 3 to 4th I have the impression that the ratio don't change. But when I give more power , the 4th become to slip and I give immediatly the check engine and sport blink.

have a good journey

 

I have a new observation for my 5eat. When I shift from 3 to 4th I have the impression that the ratio don't change. But when I give more power , the 4th become to slip and I give immediatly the check engine and sport blink. . . .

The car is probably switching into "fail safe" mode as soon as you try to go into 4th, This mode limits the engine speed and transmission gears, so it could seem as if the transmission is slipping. The check engine and sport lights are just confirming what is already known -- there's a problem, as indicated, with the turbine sensor.

 

thank you for the answers !! I will check this sensor with the oscilloscope.

 

turbine speed sensor

it is possible that the pignon that the turbine speed sensor measure d ont reving ?

i have try to measure the signal but i dont get a sinus but a rectangular when decelerating...

i get only one time a new error code that Never come back .. Valve 02 malfunction...

 

it is possible that the pignon that the turbine speed sensor measure d ont reving ?

No. The turbine is what transfers power from the torque converter to the transmission. If the car is being moved by the engine, the turbine has to be rotating; otherwise there's no input to the transmission.

i have try to measure the signal but i dont get a sinus but a rectangular when decelerating...

I don't think the signal wave shape (sinusoidal or square wave) is as important as the amplitude, and that it be free of electrical "noise". However, I haven't found any specifications about the signal.

i get only one time a new error code that Never come back .. Valve 02 malfunction...

What code was it?



Note: If the turbine sensor was replaced AFTER the P0715 was recorded, and if replacing the sensor didn't correct the problem, then there could be a fault in the wiring, either in the transmission harness or in the bulkhead harness to which it connects (The bulkhead harness goes, in part, to the transmission control module.)

If the transmission oil pan had been removed, it's possible that the transmission wiring, some of which is in the oil pan area, was affected. A wire could be broken, or grounded.

The service manual troubleshooting chart includes checks to verify the wiring from the sensor to the transmission control module. Unless you are sure the wiring is good, that would be something to look at.

See attached troubleshooting chart for P0715.

 

hall sensor measure

hello

its a hall sensor !!be carfull Never measure with a multimeter that can broke the sensor


i get a perfect square signal in 4th but only when i decelerate !!

i dont understand ... The frequency is higher at low rpm than high....

after the error i get the low frequency at low rpm in 3th in D

mechanical problem ???

 

when I get progressivly gas the frequency lowering with rpm then disapear when engine give torque

 

Where are you connecting the oscilloscope (main test probe, and low, or ground, side)?

 

Where are you connecting the oscilloscope (main test probe, and low, or ground, side)?[/QUOTE

positive b55 no 16
negative b54 no 19

 

So that's where the speed sensor signal goes into the transmission control module. The oscilloscope pattern looks good in terms of being a fairly clean square wave. As noted, unfortunately there doesn't seem to be any specifications for the signal wave-shape or amplitude, so I'm not sure what this is indicating.

It's puzzling . . . cardoc, any ideas?

Might have to get a scanner connected to read out the turbine speed data that the TCM is registering (if any).

 

the signal make 5 v peak to peak

I get a perfect square signal in 4th but only when i decelerate !!
i dont understand ... The frequency is higher at low rpm than high....

I think that something in the transmission is broke ... What do you think ?

 

It's possible, but I can't see how the signal frequency would vary opposite to the expected rpm. But then my understanding of exactly how the sensor is placed, and what it's actually sensing could be incorrect.

Perhaps someone else will have more information, and some idea of what could cause this.

EDIT:

Here's some info I found related to the 5EAT:

Turbine sensor 1 detects the rotation of the front
sun gear, while turbine sensor 2 detects the
rotation of the front carrier. Using the values
detected by these sensors, the TCM calculates
the turbine speed and uses it for shift control.

[Source: Subaru Technician Reference Booklet, 5 Speed Automatic Transmission, Module 305, July 2010, page 14]

I've only seen reference to one turbine speed sensor in the service manuals I have. (Have to do more looking for this . . .) I'm not sure how the sun gear and carrier rotate but it makes me wonder if perhaps one could be speeding up while the car is actually in a deceleration mode. In other words, is this the source of the signal seen on the oscilloscope?

 

These diagrams are from the 5EAT Mechanism and Function section of the 2005 factory service manual. It looks as if the second turbine sensor is mounted on the valve body.

This cross-section reveals the relationship between turbine sensor 2, which is on the valve body, and the front carrier (planetary gear).

From this it would appear that there's quite a distance between the sensor and the carrier. Consequently, I wonder if the sensor actually reaches up above the valve body assembly. The valve body components are not separately serviceable and I haven't yet found any pictures of the second sensor.

Maybe we can piece together enough bits and pieces of information that could help explain what's happening here.

I also found a separate DTC for turbine speed sensor 2; it's P1710. So, presumably, the transmission OBD is capable of distinguishing between a problem with sensor 1 and a problem with sensor 2.

 

I am thinking there are burned clutches in the transmission and it needs an overhaul. Slipping clutches will cause the variation in sensor data and he mention a slip in post16, "When I shift from 3 to 4th I have the impression that the ratio don't change. But when I give more power , the 4th become to slip and I give immediatly the check engine and sport blink."

The car was probably sold cheap due to needing an overhaul. The place he bought it from probably just left that out of the conversation.

 

Most people in Switzerland do NOT speak German...LOL... although they think they do (no offence power12), but actually, they don't... they speak "Schwyzerdütsch" .... good luck Cardoc with translating into that... LOL

 

Input clutch and sun gear

Thank you for the answers:gasp:

maybe the sensor measures the reality ... it measures the mechanical failure. If the input clutch not work ... could it influence the front sun gear?

 

Thank you for the answers:gasp:

maybe the sensor measures the reality ... it measures the mechanical failure. If the input clutch not work ... could it influence the front sun gear?

Ok I suggest that could be the input Clutch ? Is that difficult to replacing burned clutches ? Thank you

or i must to change the gearbox...but its not easy to find a 5eat...

Aside from the German dialect cracks, unless you are familiar, or have plenty of time to work it out yourself, the complete transmission should be overhauled and should be done by a transmission tech familiar with Subaru. A 'Master Kit' has all the clutch packs and seals needed to do the work. You have to do it in a clean room, no dust. Everything has to be cleaned, including the case. If a clutch has burned, then carbon will be everywhere and the torque converter either needs cleaned or replaced.

If you find a confirmed good 5EAT, then it will most likely be less costly and quicker to swap it out.

Either method will also require a flush of the lines and transmission cooler portion of the radiator. A hot bath flush is best because the heated fluid helps loose the particulates and get the system totally clean.

And to make sure the point gets across:

Abgesehen von den deutschen Dialekt Risse, es sei denn, Sie vertraut sind, oder haben genügend Zeit, um es sich selbst zu arbeiten, sollte die vollständige Übertragung überholt und sollte getan werden durch eine Übertragungstechnik vertraut mit Subaru. Eine 'Master Kit' hat alle Kupplungspakete und Dichtungen benötigt, um die Arbeit zu tun. Sie haben, um es in einem sauberen Zimmer, kein Staub zu tun. Alles muss gereinigt, einschließlich der Fall ist. Wenn eine Kupplung verbrannt hat, dann Kohlenstoff wird überall sein und der Drehmomentwandler muss entweder gereinigt oder ausgetauscht werden.

Wenn Sie ein gutes 5EAT bestätigt zu finden, dann wird es wahrscheinlich weniger kostspielig und schneller, es auszutauschen.

Beide Verfahren erfordern auch einen Flush der Linien und Getriebekühler Abschnitt des Kühlers. Ein heißes Bad Flush ist am besten, weil die erwärmte Flüssigkeit hilft lose Partikel und die bekommen das System total sauber.

Mis à part les fissures allemands dialectales, à moins que vous sont familiers, ou avoir beaucoup de temps pour travailler sur vous-même, la transmission complète devrait être remanié et doit être fait par une technologie de transmission familiariser avec Subaru. Un «kit Master dispose de tous les embrayages et les joints nécessaires pour faire le travail. Vous devez le faire dans une pièce propre, sans poussière. Tout doit être nettoyé, y compris le cas. Si un embrayage a brûlé, puis carbone sera partout et le convertisseur de couple besoins, soit nettoyé ou remplacé.

Si vous trouvez une bonne 5EAT confirmés, alors il sera probablement moins coûteux et plus rapide d'échanger sur.

Soit la méthode nécessitera également une chasse d'eau des lignes et la partie de refroidisseur de transmission du radiateur. Une chasse d'eau du bain chaud est le meilleur parce que le fluide chauffé aide lâche les particules et obtenir le système totalement propre.

I didn't bother looking for a Swiss/German.

 

64 % Swiss speakink German
20 % French
6,5% Italian
0,5% Romanche

 

You know my post was a joke, right? Because what is spoken within those 64% can hardly be called "German" ...LOL - again - joke! Hope you have a sense of humor my friend! I hope you know what "LOL" means...if not, Google it!