| From | Message |
Adam
Dodge Dakota
JOIN HERE
1/16/2004
21:31:13
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 Subject: Check engine code 12
IP: Logged
Message:
My check engine light came on after offroading the other day. Once I got home I did the key on/off method and could only get a code12(the direct power input to the pcm was disconnected). From what I've researched on this site it doesnt seem like anything important, so I reset the computer by unplugging the negative terminal on the battery but after a little driving the light came back on, and again all I can get is code 12 so I'm a little confused. Also I checked the gas cap and it was tight so that can't be the problem. I have a 97 4x4 318. Any help is greatly appreciated. Thanks
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Jar Head
Dodge Dakota
JOIN HERE
1/16/2004
21:40:06
| RE: Check engine code 12
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Message:
12 Direct battery input to PCM was disconnected within the last 50 key-on cycles. *
Sounds like you may have jarred loose a conncetion somewhere
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Adam
Dodge Dakota
JOIN HERE
1/16/2004
21:42:04
| RE: Check engine code 12
IP: Logged
Message:
Thanks for the quick response any guess where to check?
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Adam
Dodge Dakota
JOIN HERE
1/17/2004
18:28:11
| RE: Check engine code 12
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Message:
I managed to get another code by cycling the key on off after I get the 12. I got a code21 which has something to do with the oxygen sensor but I dont really understand what it means. And it mentions an upstream and downstream oxygen sensor, I only thought I had one on my truck. If anyone can clarify what the code means I would appreciate it.
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chief08087
Dodge Dakota
JOIN HERE
1/17/2004
23:38:01
| RE: Check engine code 12
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Message:
u have 2 o2 sensors. one before the cat(upstream) and one after the cat(downstream) check the connections at the sensors. maybe u pulled one out when u where wheelin
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Glenn
Dodge Dakota
JOIN HERE
1/18/2004
13:13:36
| RE: Check engine code 12
IP: Logged
Message:
Very interesting, I also have a 97 CC 4x4, 318. Last year I had the exact same problem. It was the 02 sensor. I replaced both, all was good. Good luck.
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