Pejo 307 uphill gearbox error

First of all, hello everyone I just joined the forum my car 2004 model pejo 307 car is going on the slopes, while the gear is in d, suddenly it sounds 3 times, 3 d lines appear at the bottom and the snow mode or the sports mode icon appears at the bottom, then these icons disappear and only 3 lines remain. If my vehicle stops and runs again, the malfunction goes on, can anyone help if I encounter such an event? Respects.

Get well looks like a classic solenoid malfunction. Of course, it is necessary to connect to the computer to make sure. The solenoid and transmission seem to save oil change.

In your own program (PP2000), you can get healthier results if you read and write the errors it gives in the service.