Peugeot 307 2.0 HDI P1621 Help

[ubistvo]

I've got a problem on a Peugeot 307 2.0 HDI 136 RHR with a SIEMENS SID803 ECU.
The car start, run until warming then stop. After several start and stop, the car run fine
but i've got P1621 in ecu memory and can not erase until whole engine not cold
I look in ecu resolder all points but still the same problem.
Can someone help me?

Thanks

[morgano]

Start from the begining. Ecu has original file or a mod?

If ecu is not modded and you suspect it as culprit take scrapyard ecu and clone it.

If still failing go for temperature sensors measurements to see if them ok or someone is giving false data.

If all ok till this point start troubleshooting the wiring.

But best idea is go recording live data with diagnose equipment untill car fail and try to see the condition that made it fail.

[ubistvo]

Thanks
The ECU is original data not modded i will try if found another ECU from scrapyard or if i can found new ECU firmware to flash him
I look the temperature measurements and all look ok,i will look again
Thanks