TJ Codes

Nov 26, 2003 8 Replies
J

Hello everyone,



another question... how do I read the engine check codes on my 97 TJ? I tried the odometer thing (ON OFF ON OFF ON) but nothing came up.



Any suggestions?



Thanks again, Joe.


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J

Thanks Bill!

I just did that and after a couple of tries I got it right... It displayed the codes 12 and 55. Now I'm going to try and find out what they mean...

Cheers, Giuseppe.

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J

This the info I got for code 12:

"Direct battery input to PCM was disconnected within the last 50 Key-on cycles."

Is this accurate? Also what does this mean? What's a PCM?

Thanks again, Joe.

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C
55 means there are no more codes.

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C

I think it means Primary Control Module, or similar. Basically, it is The Computer.

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D

J did pass the time by typing:

12 = your battery has been disconnected within the past 50 or so starts. 55 = end of codes

12 is normal to see. When 12 is followed by a bunch of other codes the first thing to check is the battery connections.

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