Speed sensor - G68??

[AndyP]

Anybody know where this is?? I've just pulled the blink codes from by 93 S2 Avant and it's coming up with 1231, which is a vehicle speed sensor fault. Also does anybody know if this has anything to do with driving the mileometer on the dash as this is playing up aswell.

Cheers

Andy

[Mihnea]

Yes Andy, it's the same sensor.

HTH,

Mihnea

[AndyP]

Do you know where abouts it is on the car? and are they expensive to replace?

Thanks

Andy

[gavs20v]

out of interest did you drop the codes with the snap-on fault finder? i dropped the codes with a friedns snap-on one with the engine off but ignititon lights on it came up with this fault. When the engines running it doesnt. Apparently this is normal. Hope this helps.
Nice one
Gav

[AndyP]

Codes were pulled using an LED, normally I would not have read much into the G68 sensor error, but as the mileometer is playing up I think there may be a fault.

All I need to know now is the location of the sensor, is it driven from one of the ABS sensors as on other cars I've owned??

Cheers

Andy

[audiman]

This is a sensor on the gearbox, its the one with 3 wires on it IIRC.

[porkkis]

I'd say it's more probably a wiring fault than the sensor itself OR then the instrument cluster is faulty (br/r cable IIRC).
The speed sensor signal goes to the cluster FIRST and spreads from there as a bit different to other devices (wh/blue)!

[4WheelDrifter]

The sensor is on the gearbox just above the N/S F driveshaft output. I had a problem with mine once, it was just a loose connection in the plug at the sensor. It caused my speedometer and odometer to stop working.
IIRC the sensor's around £10 from the Stealer. It's just a little reed switch in a plastic tube. Just lift the plastic arm and rotate it, and it should pop out, if you need to replace it. HTH

[LVrainman]

I have got the same fault code as AndyP on my S2 Avant. No road speed info. no signal. The instrument panel is working great except the average fuel consumption, avearge speed etc. on the Onboard computer. The only things that has been presented is kilometers to empty tank and driven time.

What could be wrong here? the sensor G68 itself? the Onboard computer in intrument panel or what else?

Where is the Sensor G68 on the gearbox? The only connector I found there is for the rear gear lights.

Any good hint or tip on solution welcomed.

Thanks!

[urquattro-island]

hello

this fault comes up, when ignition on and engine not running, as it is the engine speed sensor. If this is faulty the car will not start.

[LVrainman]

unfortunaltely this fault comes up while engine is running...

[urquattro-island]

nuu

hmm what ooohh he he sorry misread the nr there.. g68 thought that was G28 so sorry, a little fast there...

[AndyP]

My problem was fixed by removing the instrument binnacle and cleaning the contacts on all the wiring connectors, the trip computer started working then. It turns out that the speedo was getting held back by peeling white paint on the clocks, careful trimming with a scalpel cured that.

Andy

[LVrainman]

thanks a lot for your hint. now I have something to start with

[UrS4boy]

Anybody know where this is?? I've just pulled the blink codes from by 93 S2 Avant and it's coming up with 1231, which is a vehicle speed sensor fault. Also does anybody know if this has anything to do with driving the mileometer on the dash as this is playing up aswell. Cheers
Andy

Andy: I think its the G28 not G68.
The link to one of my AudiWorld posts below pertains to the AAN but should be very similar to the ABY.

http://forums.audiworld.com/s4s6/msgs/116988.phtml

Hope this helps.

Dave F.