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Help on Error Code


 
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egomez
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Joined: 02 Nov 2010

PostPosted: Sat Nov 06, 2010 7:54 am    Post subject: Help on Error Code Reply with quote

I need help understanding what these codes means. I used the key trick in my GC 1995 V8 5.2 limited and below are the codes I got.

12 Battery or computer recently disconnected
47 Battery voltage too low and alternator output too low
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IBTJn
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Joined: 31 Dec 2004
Location: Just Outside of Portland, OR

PostPosted: Sat Nov 06, 2010 8:54 am    Post subject: Reply with quote

Either the voltage regulator, alternator, protection diode, or bad battery I'd guess? It's not going to specifically tell you which because it doesn't know. The electrical system isn't like a simple sensor...there are connections, cables, diodes, fuses, and a host of things in that which can fail. It's merely telling you low voltage is present and there is a problem.

I'd start with the simple things first. What kind of condition are the connections and wires in? Especially the ground (-) to the block and chassis. Sometimes simply cleaning them up and/or replacing them works. Is the battery in good condition? If it's old, perhaps consider replacing that if mediocre. Then move on to the alternator & connections.

Low voltage can be caused from many things, including a short. But usually making sure everything connection wise is in good working order will lead you to what to look at next.
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