Battery being drained while shut off

[robusaret]

When truck is off something is pulling battery down, shop has run check after check with no result. The battery checks fine when charged.

 

[audiophile]

Have they performed a load test on the battery?

 

[4xdad]

That’s what happened to me on the weekend 400kms from home it was a short in the trailer wiring or the license plate light I ran a scan with my blue driver scan tool and that’s the code that came up I unplugged the trailer wiring and the light and replaced the battery no problem now BlueDriver 160 bucks on Amazon seams to work good