Technical Transmission speed sensor comfortmatic

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Technical Transmission speed sensor comfortmatic

Petersh

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Jun 12, 2025
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Wales
Hi all,
I own a 2009 ducato motorhome with comfortmatic. To be fair it’s been brilliant no problems.
The other day the dreaded check transmission flashed up, however that was it no change whatsoever with the vehicles behaviour.
When I stopped and started up again the light went out and all was well . The following day it happened again.
So I used the MES and found two fault codes
PO 719 and PO 720, brake switch and transmission speed sensor.
I have ordered both , however I am struggling to find where the speed sensor is located, I have scoured the internet, lots of mentions but no actual help in its location.
Following the wiring I have found something which appears under the reservoir in a really tight space . Is this it ?
Does anyone out have any ideas, it would be much appreciated.
Sorry for such a long message.
 
P0720 seems to be pointing towards the ABS unit, e.g. there could be something wrong with a wheel rpm sensor signal.

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