508 electrical issue soon after remap

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Ivo S
New User
Posts: 1
Joined: 05 Jul 2025, 12:24

508 electrical issue soon after remap

Unread post by Ivo S »

Hello,

I recently remapped the ECU on my 508 blue HDI 120 and the next day during some testing I got a warning light about engine failure...
When tested, I got the following errors listed:
B1601:15
B1738:14
B1602:14
Talking to Chat GPT (very useful but not quite there yet), it suggested replacing CPC and main relays. Trouble is I can't find any relays in the engine fuse box or near it. I would appreciate any help with that.

Many thanks
DTCs.jpg
PaulC5
Donor 2024
Posts: 2285
Joined: 06 Jun 2023, 15:26
x 569

Re: 508 electrical issue soon after remap

Unread post by PaulC5 »

Have you tried to remove the remap to see if the car reverts back to normal ?