From Tomas Harden@21:1/5 to All on Sat Dec 18 19:40:02 2021
A friend has an old Astra wagon, and the central locking stopped
working. I just got a cheap Chinesium scantool that happens to cover
this model, so got a code readout, and it returned U0009
For Opel cars, this means:
High Speed CAN Communication Bus (-) shorted to Bus (+)
If that is so, shouldn't it cause a lot more problems?
Nothing else seems to be wrong with the old clunker.
So I guess it only affects communication between 2 modules either side
of the shorted cable.