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Discussion Starter · #1 ·
I have a 1999 Jetta VR6 A4 with an automatic transmission. Been getting fault code P0722 along with fault code P0715. I have already swapped out G38 with a known good sensor and problem is still there. I came to the I would like to reaplace the other speed sensor G68 but have been having a problem locating the parts from a parts store for this year Jetta and model. From what I have been told there are 2 different type sensors made for this year. My car had the more rare hard to find sensor with the square connector. The more common one has an oval type connector. Does anyone know a good online parts store that would sell this sensor and possible have a picture of it. I have already order what was supose to be the correct sensor twice from other online stores and they keep sending me the oval type sensor. Has anyone ever ran into this problem before??? I know I can go to a deal and get the part but they would probably charge me $200.00 for a $50.00 part. If anyone knows any good VW parts stores. Please let me know.
 

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This is what I could find, I think the left sensor is either 095-927-321-C or 095-927-321-B
http://www.aboveallmotorwerks.com/P...on-(on-Transmission)__FACET_095927321C_S.aspx
http://www.worldimpex.com/parts/genuine-part-at-speed-sensor_118751.html

I think the right one is either 01m-927-321 or 01m-927-321-B
http://www.worldimpex.com/parts/genuine-part-tramsmittr_118746.html
http://www.worldimpex.com/parts/genuine-part-g68-sensor_118745.html

So you have codes for both sensors (coincidence?) and you replaced one of the sensors and the codes are still there, I don't think replacing the other one is going to help either. You should probably be looking at grounds, wiring and the TCM.
 

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Discussion Starter · #3 ·
I don't have a wiring diagram to trace the wires to the TCM. Do you know where the ground wires are that I should check? The reason I wanted to replace the G68 sensor was that I thought if maybe that one went back that It could give you a code for the other one as well since they are both speed sensors for the trans and kind work in conjunction with one another? The links you provided still don't really help to much since 2 out of the for links had pictures for the parts and the G68 sensor was still the oval type connector and not the square type. Any idea where I can get a good wiring diagram?
 

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The only place I know of to get the wiring diagram would be from Bentley publishing, you would have to buy either the repair manual or the service DVD, that's what I use.

The grounds I was talking about are heavy gauge wires from the tranny to the engine or the tranny to the frame. They can get dirty or break and cause wierd electrical issues, I don't know where they are on your car.

Also, on some cars that have the TCM in the foot well on the front passenger side there are issues with the TCM getting wet ( I don't know how). This can also cause strange codes or TCM failure.

So if the sensor doesn't fix it you can look at those things.
 

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Here is the wiring diagram from a New Beetle, first half of 99. It's the only one I have with the 01M tranny, you will see that they dont share any wiring between the sensors and the TCM.

 

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Discussion Starter · #7 ·
Hey Naconi, thanks for the wiring diagram. I don't think I have to worry about the TCM having water damage, because the TCM is located in the cowl under some plastic trim on the Jetta's from 1999.5 to 2005.5. The Passats are the one's you got to worry about with the water damage under the passenger foot well. I'll keep you posted on my findings.
 

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Discussion Starter · #8 ·
Just an update. Went through all the fuses in the car and none of them were blown. Havn't gotten into checking all the ground yet. I figured I'd do that when the G68 sensor comes in since I will have the battery box and intake tubing out of the way. I been looking through the of the other posts on here and came across a Bulletin about out of date TCM software. Does anyone know anything about that or is that could cause the problem I am having?
 

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Discussion Starter · #9 ·
Ok so, got my brand new G68 speed sensor in the mail yesterday. Got it all installed, what a pain in the ass that was, having to sling the engine and trans to removed the transmission mount. After I removed the trans mount visually inspected grounds and everything around there. Everything looked fine. Installed the new sensor. Put everything back together. Cleared code out of the ECM with a genric scanner. It been 2 days now and 50 miles later and the codes have not come back and the trans now has all 4 gears again. So my question is this? Is it possible to get both fault codes P0715 and P0722 if you have a bad G68 speed sensor? All I did was replace the G68 and it took care of both codes. I never even touch any of the other sensors or unplugged any of the harnesses while replacing the G68. Hopifully there codes will stay gone for a long time now. Not sure if this was the proper way to go about fixing it or if it is truely fixed or not but as for these 2 days and 50 miles later it seems to be.
 

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98 Jetta P0715

I have 98 Jetta throwing a P0715 code. It looks like I'm going to have to replace my G68 Sensor as well. Do you have any advice on replacing it from when you replaced yours. Where did you order your new sensor from. Thanks.
 

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715 code refers to the G38 sensor not the g68. The code can be caused by other stuff but you would be better off trying to replace the g38 not the g68.

See this page for sensor locations.

http://www.kansascitytdi.com/01m faq.htm

Where to order from... I havn't found that ordering these online really saves much as compared to what I can buy them from the dealer for.

It is kind of nice to have them show up at the door (shipped) rather than driving to go get them. I dont know if it worth it to you to pay shipping or not.
 

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Need similar help

CoolAirVW,
I have a 2001 VW Jetta 2.0L Automatic. I have read multiple posts, and have even visited KansaCityTDI and reviewed the great write-ups there, I would just like to be sure of some things before I proceed with working on my car.
My car is stuck in "limp mode," that is it works in reverse, and is stuck in 3rd gear when placed in drive, but will manually cycle from 1 to 2 to 3, but won't go into overdrive. It was intermittently doing this a few months ago, but has permanently been this way for a little over a month now. I don't know of anyone closer than Atlanta to me (70 miles) with a VAG-COM, and the nearest dealership is at least 45 mins away. So I'm pretty much at the mercy of a local transmission shop or my own diagnosis. I scanned it myself this weekend before trying a shop. I got 2 codes:
P0420 and P0715
Now the specifics of my questions...
Should I start with the G38 speed sensor based on the P0715 code? And where should I buy it? Are there any good aftermarket versions of it? Is 095 927 321B the VW Part number?
And do you have any input regarding the 420 code (catalyst below threshold)? Dirty throttle body possibly?
Oh, and my scanner will not clear the codes??? What's up with that?
Thanks for all the great info! It's obvious you've spent some time working on these cars!
 

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Vw golf 4 1999 not changing gears

Hi All,

I have a vw golf 4 1999 model which has a tranny behaving funny.It has gears 1,2 and 3 but 4th not engaging.Replaced G68 AND G38 and got the codes erased by a generic scanner.Still the problem persists.What could be wrong.Gear 3 engages at about70km/hr.
 

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Hi All,

I have a vw golf 4 1999 model which has a tranny behaving funny.It has gears 1,2 and 3 but 4th not engaging.Replaced G68 AND G38 and got the codes erased by a generic scanner.Still the problem persists.What could be wrong.Gear 3 engages at about70km/hr.

One more thing I have realised is that the panel on dash showing transmission position is at times turning black.
 

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Should I start with the G38 speed sensor based on the P0715 code? And where should I buy it? Are there any good aftermarket versions of it? Is 095 927 321B the VW Part number?
Yes start with the G38. I tried a few of the links above and the ones without a picture might be it. One showed a pic of the G68, and thats definatly not it.

any input regarding the 420 code (catalyst below threshold)?

I have dealt with several of these codes and all the ones I've dealt, that had no other engine codes needed a Cat. One of them was caused by a aftermarket cat that wasn't able to do the job. It would be best to scan with vag-com first though because if you have other codes that your OBDII code checker isn't showing then you could be misled (ie 02 codes or maf codes).

There is a trick that the local muffler shop and I talked about. He "spaces" the rear 02 out of the exhaust stream and this tricks the computer into thinking the cat is working. He has used it succesfully on 2 VW's at this point.


Oh, and my scanner will not clear the codes??? What's up with that?

This probably means the code is a "hard fault" meaning it reoccurs immediatly the moment you clear it.
 

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issue with G68 code 00281

Hi CoolAirVW:
I have a situation with a 1999 new beetle with 01m tranny. I scanned the TCM with vag-com and got 00281-Vehicle Speed Sensor (G68): No Signal. I checked the voltage in the measuring block group 2 and it shows 0.02v (it must be in 2.5 to 3.0v), but the thing is when I select (D) it engages on 2nd gear and when I run the car I have to accelerate from 5000 rpm to shift 3rd gear. Another thing is that the speedometer works fine. I replaced the g68 with a good one and still do the same thing.:banghead: Any suggestions???

Sorry for my english!!!:(
 

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Hi CoolAirVW:
I have a situation with a 1999 new beetle with 01m tranny. I scanned the TCM with vag-com and got 00281-Vehicle Speed Sensor (G68): No Signal. I checked the voltage in the measuring block group 2 and it shows 0.02v (it must be in 2.5 to 3.0v), but the thing is when I select (D) it engages on 2nd gear and when I run the car I have to accelerate from 5000 rpm to shift 3rd gear. Another thing is that the speedometer works fine. I replaced the g68 with a good one and still do the same thing.:banghead: Any suggestions???

Sorry for my english!!!:(
G68 sensor code would be caused by G68 sensor, wiring to it, connection issues, water intrusion into wiring, or bad TCM. You may be able to pinpoint the issue with ohms testing between the TCM and the sensor.

Speedometer is a funtion of the G22 VSS not the G68.
 

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Thanks

Thanks for the info CoolAir!
I think I found the G38 sensor at PartsTrain, so it's on it's way. Also got a filter, so I'll be following your fluid change instructions at KansasCityTDI, too. Thanks again!
 

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Thanks for the info CoolAir!
I think I found the G38 sensor at PartsTrain, so it's on it's way. Also got a filter, so I'll be following your fluid change instructions at KansasCityTDI, too. Thanks again!
so your gonna try replacing the G38 to fix the code for the G68? Be sure to let us know how that works out here in this thread.
 

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Update

Replaced the G38 sensor with a Febi brand one from PartsTrain.com for $25, and so far so good! No codes and shifting like it is supposed to, so here's hoping it stays that way, and good luck to everyone else!
Thanks again for the info!:D
 
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