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tech / rec.autos.tech / CAN bus shorted? how serious?

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o CAN bus shorted? how serious?Tomas Harden

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CAN bus shorted? how serious?

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From: th...@invalid.com (Tomas Harden)
Newsgroups: rec.autos.tech
Subject: CAN bus shorted? how serious?
Date: Sat, 18 Dec 2021 19:40:02 +0800
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 by: Tomas Harden - Sat, 18 Dec 2021 11:40 UTC

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.

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