There’s no longer such a thing as a Sonnax valve body assembly. I would suggest that you send your worn unit to someone like Valve Bodies UK http://www.valvebodyuk.co.uk/ or STA Aylesbury https://www.staautogearbox.co.uk/ who own a Hydra-Test...

Phil. Many thanks. Got around to doing this and all now sorted. 2hrs of work including taking of and on. Thanks again.

There have been so many posts about DTCs related to the inhibitor/gear position switch on the 6HP26 transmissions recently, that I thought I would try a quick and dirty test to see if I could measure the switch in operation just using tools many...

Hi Justin, Yes, P0705 indicates a problem with the inhibitor switch. This switch is also known by many other names, including: xyz switch gear position switch neutral safety switch selector switch The switch is hidden behind a tin cover behind...