B1601 15 BSI Error code

[TiberGt]

Hi.
The "Electrical circuit failed: have your vehicle repaired" error pops up every time I start/turn the ignition on.

I ran a diagnosis with Diagbox and I get: B1601 15 -> Central power switch positive (+CPC) relay control fault.

I own a Peugeot 508 hybrid 2012 ( 200 Horsepower model ).

Context:
Today I got some mechanics to try and fix the radiator fan since it's not working.
They tracked down the issue, suggesting I should replace the fuse box located near the battery because they say there's a relay there that's not working as it should.
So, they must have broken something in there.


I tried deleting the errors 3 times with DiagBox and also did a battery reset procedure.
What's wrong and what can I do to fix it?


Thanks.

[GiveMeABreak]

Here is the fault descriptor for this code, but post up your VIN (automasked on post submission) so I can check this is the same for your vehicle, just to make sure.

Fault Code:	B1601 15
Description of Fault:	Central power switch positive (+CPC) relay control fault : Open circuit or short circuit to the plus. The control is active even though the control copy is inactive. The control line of the central power switch positive (+CPC) relay is considered active when its voltage is lower than 2,7 V Fault confirmation time: 1 seconds. Conditions of activation of the diagnostics: The following conditions have to be met: - BSI triggered - LIN networks re-awakened
Conditions for Fault to clear:	Control copy active Time of disappearance of the fault: 1 s
Downgrade Modes whilst Fault is active:	None, but this may trigger the "SERVICE" warning lamp Warning message and / or an audible warning.
Symptoms:	No supply of electrical components.
Suspect Areas:	Connectors Electrical harness Built-in systems interface Supplies protection and management unit

So I would first check and test all the fuses in the supplies protection management unit as these power various equipment, but if the garage have tested it and are confident, then I can't do much more than provide the code description for this fault for you.

[TiberGt]

Hi,
This is the VIN: VF3**************[VIN obfuscated, can be read by forum staff]

I'll suggest this to the mechanic!
Thank you very much!

[Juanjo]

Que puede ser ??

[myglaren]

Que puede ser ??

As this is a British forum, albeit dedicated to French cars, very few of our members will speak Spanish, therefore please ask for help from someone h can write in English for you, or use a translation program such as Google Translate or DeepL.

Como este es un foro británico, aunque dedicado a los coches franceses, muy pocos de nuestros miembros hablarán español, por lo tanto, por favor pida ayuda a alguien que pueda escribir en inglés para usted, o utilice un programa de traducción como Google Translate o DeepL.