Motor bucks slightly (long)

Brett Dikeman brett.dikeman at
Thu Nov 12 18:29:42 PST 2009

On Thu, Nov 12, 2009 at 4:38 PM, Peter Schulz <pcschulz at> wrote:

> You forget that for the most part the 3b ECU has limited diagnostics, and
> you often need a hard failure to get a code.

Limited yes, that's why people should look at the channel values if
they suspect a sensor is partly working.  That said, if a sensor
connection is bad, it'll trip a code. Same for most of the components
the ECU drives.

> Even with VAG COM monitoring channel 000, you would likely not know what's
> good or bad...

Of course you would.  Every single one is documented with pages on how
to interpret them.  The Bentley tells you exactly what to test if a
value is outside a range it gives.


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