Multiecuscan

Hi hoping someone mite be able to shed some light as I’m getting very near to chucking the towel in, I’ve got a Fiat Abarth 595 MY17 I’ve got a fault that pops up when I turn my lights on saying (Check parking lights) & fault codes on Multicuescan are :
B1022-13 - Left or front side lights - Open circuit
B1021-13 - Right side lights or taillights - Open circuit

I’ve checked fuses 37 & 51 & tested
Inspected earth lead off battery looked ok
I’ve removed rubber sheath on boot lid & inspected couldn’t see any issues, & I’ve also disconnected the battery for 15 minutes, cleaning terminals on battery & rear lights, light bulbs, brake lights work fine as do head lights but don’t think I have side lights nor do the rear lights work other than braking…

Any advise or what it could be?

Thankyou Chris

Also to make things harder the car was previously stolen & the key I have isn’t the original & on closer inspection I don’t think the BCM is original or has definitely been removed at some point which makes sense to have a different key, so if this maybe points anything in the right direction? Everything else works ok just seems to be side lights front & rear…

This is what’s fitted if it’s even correct… maybe why I’m getting this issue?