Peugeot 307 2.0 HDI 136 RHR SID803 P1621 problem

[spirky]

Hello,
I've got a problem on a Peugeot 307 2.0 HDI 136 RHR with a SIEMENS SID803 ECU.
In the morning, at first start of the day, the car start, run 5 seconds and stop. When i try to restart, same problem. After several start and stop, the car run fine but i've got P1621 in ecu memory.
I can erase the fault code but it'll come back. All days it's same problem...
I read on the net that it was a software problem and not a hardware problem ? Do you have a solution at that ?
The ecu is a SID803 5WS40029R-T

Here are the original dump read by genuine CMD BDM
Thanks for help
BR