Topic

So managed to get a replacement Lambda sensor and get it swapped out after work. Found it to be burnt through from coming into contact with the exhaust 🤦

From the twist in the cables it would appear the previous one had been fitted whilst already plugged in so maybe that contributed🤷

Hopefully that should be an end to this saga and I can have a bit more confidence of not getting stranded 🤞

I hope you solved your problem. As I mentioned above same Brown/Pink wire provides power for many engine components. Lambda sensor is one of them. So if you had melted wires which could touch metal body or exhaust and by that ground itself, that would certanly blow your 30 Amps fuse.