A fault code doesn’t yet mean the unit or sensor itself is faulty: often it’s the plug and connector leading to it.
Possible causes
- Solenoid or valve body fault
- Sticking valve or check ball in the valve body
- Mechanical gearbox fault
What you can do yourself
- Do not drive, to avoid finishing off the gearbox
- Check the fluid level and condition per the manual
- Inspection and repair — by a technician
On Oleg’s website:Transmission adaptation ↗
The explanation comes from the error code reference in the AvtoElektrik PRO app.