2016 citroen c4 picasso

[cqae]

Hi guys, I have a Citroen C4 Picasso here, that has come from an accident repairer & has the codes-

B120a: collision risk alert function fault: detection of impact
B121D: BSI internal fault for adapted cruise: receipt of the impact information impossible.

I assume these are crash data stored? I havent removed the BSI yet, but the part number is 980 6687980 according to my diag data. I am wanting to know if I can just re write the eeprom to erase these codes & if so, does anyone have a file?

[robert1232]

are you fix thats??

[matik185]

First of all , did you replaced damaged parts? Did you tried to remove DTC using Diagbox or Lexia ?
It looks like crash data stored..

[robert1232]

crash clear and no dtc in sensor
only in bsi b120a collision risk alert function fault: detection of impact

[haiko]

Hi guys, I have a Citroen C4 Picasso here, that has come from an accident repairer & has the codes-

B120a: collision risk alert function fault: detection of impact
B121D: BSI internal fault for adapted cruise: receipt of the impact information impossible.

I assume these are crash data stored? I havent removed the BSI yet, but the part number is 980 6687980 according to my diag data. I am wanting to know if I can just re write the eeprom to erase these codes & if so, does anyone have a file?

Hey guys. Did you fix it? I have same codes in my C4 Picasso and adaptive cruise doesn't work. But car had not any accident.
Thank you.

[skilrod]

For those looking for a solution in the future. You need to activate the "reactivation of systems after a collision" function. For me, there was such a function in the Texa IDC5 tester (BSI module).

[forward99]

Thank you my friend for the information. I have a Peugeot 2008 2023 in my garage after a rear-end accident. Cruise control did not work and there was an error B 120A. CHECKED AUTELS. In BSI I did as you wrote and everything started working as it should. Thanks again for your help, best regards, Yuriy