02 jeep grand cherokee 98k 4.0 engine code 12

2002 JEEP CHEROKEE
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ENJOI78
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check engine light not on but when key on acc position it gives me code 12 how can i clear or check the problem? i know it started when my rad. fan relay went bad but i already changed it ( the fan relay).
Feb 16, 2007 at 11:41 PM
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CHEVY22
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hi
pull the neg battery cable for 15 minutes and recheck ,

jim
Feb 17, 2007 at 12:32 AM