Dear customer, thank you for choosing Justanswer. My name is***** would like to help you.
The error code indicates that the solenoid valve D on the control box of your gearbox no longer functions correctly.
This can have various causes.
First of all, the workshop should measure the wiring harness in the gearbox, from the plug on the gearbox to the solenoid valves. These can sometimes crack in the insulation due to the oil in the gearbox, since oil is electrically conductive, this can lead to failures.
If the linkage is ok, replace all the solenoid valves on the control box in the gearbox. Replace them all, because experience shows that the next one will break very soon and it is annoying to have to repair the gearbox 5 times within one year.
I would be very happy about a rating with 5 stars over the star bar at the top of the page, without this rating the site operator does not pay us experts.