206 speedo faulty

imperial21 · Unread post by **imperial21** » 20 Jul 2011, 18:50

Hi All
My friend has asked me to look at his 206 its a year 2000, automatic 1.4. The speedo has stopped working, I guess its an electronic speedo ? Could it be the sensor in the gearbox ? What can i check ?
Thanks

spider · Unread post by **spider** » 20 Jul 2011, 20:55

I would (as I've not seen an auto one for a while) its similar to the manual, in that there's a sensor screwed into the diff housing area where the cable assembly would of once gone.

As its relatively quite low down, unplug it and inspect the plug / sensor terminals for corrosion. Not that likely but worth a quick look.

I don't think autobox's suffer from the speedo drive gear going for a "walk" down the shaft like some of the MA manuals can, although this is very annoying its rare, thankfully.

Start with the sensor wiring anyway. Is it multiplexed ? (if in doubt, the key is square on a multiplexed car and rounded (a bit) on non multiplexed as you're right on the changeover year.

Unread post by **Peter.N.** » 21 Jul 2011, 10:11

I replaced a sensor recently in a 406 if its the same one they are about £20.00 on ebay.

Peter

Unread post by **CitroJim** » 21 Jul 2011, 10:48

Speedo sensors are often the same across the board. There's two and three pin variants but that's about all as far as I know...

imperial21 · Unread post by **imperial21** » 21 Jul 2011, 20:49

The car is an x reg but i stiil think its a 2000, i think the key is rounded. whats the chance the speedo sensor has failed ?

Unread post by **Peter.N.** » 21 Jul 2011, 21:43

Quite likely I would say. My speedo was intermittent, I cleaned the connections on the plug and it would be OK for a while then pack up again. Had no more trouble since I fitted a new sensor. The only other likely cause are dry joints on the instrument panel, so I would do the easiest thing first.

Peter

imperial21 · Unread post by **imperial21** » 01 Aug 2011, 19:48

Hi An update to the problem, The car belongs to my friends wife he drove the car at the weekend and said the mileage is still going up but no speedo, could this be a faulty dash ?

Unread post by **Peter.N.** » 01 Aug 2011, 21:46

Well it won't be the sensor that's for sure. It could be a dry joint on the instrument panel or the actual instrument could be faulty, in any event the dashboard will have to come out so it might be simpler to replace it.

Peter