I have a Ducato homemobil, which has 2,8 JTD motor and automatic gear box, type ZF-4HP20. Now the box do not chance up to the fourth gear. It tryes do it, but the consequence is, that only the third gear works on. At the same time the gear box warning light lights up. When I stop the engine and start again the warning light don’t lit in any more and the gears 1-3 works again right.

Do somebody has had same kind of problems and how there have been repaired

There are others who have the same kind of problems. This might help you:

https://www.fiatforum.com/ducato/160625-ducato-hymer-automatic-gearbox-mistery.html?p=1703767

http://www.motorhomefacts.com/ftopic-20313.html

please if you find a solution share it on the FF


Viv