driver door dodgy-02 peugeot 206?

Sometimes when i press the fob to lock the doors, it locks, and then opens within one second, not allowing me to lock the doors unless i push them all down manually. its really tempremental..
also the driver door button wont lock the other doors.
A warning stop light is coming on also and the screen on the dash beeps and says right door open, when its not!!!??