Trouble code 18010 Power supply (B+) Terminal 30 - Low voltage

I recently noticed the check engine light was lit in my car. So I
bought an engine scanner to see what the problem was (I thought it was
the MAF). But the scanner read: 18010.
In the the manual, that came with engine scanner ( I don't have my
car's owner manual), the definition given for this code was: Power
supply (B+) Terminal 30 - Low voltage. But that doesn't tell me much.
Could anybody out there, please let me know what this means.
After scanning the engine, I erased/reset the problem code and the
check engine light is now off, even after a good ride.

Also, my car is a 99 A4 2.8

Thanks any thoughts would be great!!

I'd like to fix this myself if possible.

> wrote in message
oups.com...
> I recently noticed the check engine light was lit in my car. So I
> bought an engine scanner to see what the problem was (I thought it was
> the MAF). But the scanner read: 18010.
> In the the manual, that came with engine scanner ( I don't have my
> car's owner manual), the definition given for this code was: Power
> supply (B+) Terminal 30 - Low voltage. But that doesn't tell me much.
> Could anybody out there, please let me know what this means.
> After scanning the engine, I erased/reset the problem code and the
> check engine light is now off, even after a good ride.
>
> Also, my car is a 99 A4 2.8
>
> Thanks any thoughts would be great!!
>
> I'd like to fix this myself if possible.


The code 18010 has the following possible causes :

a) Weak battery
b) Alternator fault
c) Cables disconnected from battery.

Have you disconnected the battery recently ? I'd personally ignore the
problem unless the 'Check engine light' reappears. Then check the cables to
the battery, the battery itself and then the alternator.

Richard

Yes I did, recently unplug my battery and I remember it being a little
loose when I replugged it. But lazy me, I didn't re-tighten the wire
until I saw the check engine light come on. ( I must have hit a bump
and the wire must have moved slightly). I had a hunch that it could of
been that. Well thanks alot.
Richard Goulding wrote:
> > wrote in message
> oups.com...
> > I recently noticed the check engine light was lit in my car. So I
> > bought an engine scanner to see what the problem was (I thought it was
> > the MAF). But the scanner read: 18010.
> > In the the manual, that came with engine scanner ( I don't have my
> > car's owner manual), the definition given for this code was: Power
> > supply (B+) Terminal 30 - Low voltage. But that doesn't tell me much.
> > Could anybody out there, please let me know what this means.
> > After scanning the engine, I erased/reset the problem code and the
> > check engine light is now off, even after a good ride.
> >
> > Also, my car is a 99 A4 2.8
> >
> > Thanks any thoughts would be great!!
> >
> > I'd like to fix this myself if possible.
>
>
> The code 18010 has the following possible causes :
>
> a) Weak battery
> b) Alternator fault
> c) Cables disconnected from battery.
>
> Have you disconnected the battery recently ? I'd personally ignore the
> problem unless the 'Check engine light' reappears. Then check the cables to
> the battery, the battery itself and then the alternator.
>
> Richard

> wrote in message
ups.com...
> Yes I did, recently unplug my battery and I remember it being a little
> loose when I replugged it. But lazy me, I didn't re-tighten the wire
> until I saw the check engine light come on. ( I must have hit a bump
> and the wire must have moved slightly). I had a hunch that it could of
> been that. Well thanks alot.

No problem. I hope it's solved.

Richard