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Old 03-23-2010, 02:10 PM   #1
Join Date: Feb 2010
Posts: 32
Error code P1391 CMP

does anyone know anything about this? i have a 97 wrangler 4.0 auto and im getting this code.

kind of over heats a little i think. picked up the crankshaft sensor at autozone and going to install. should i pick up a camshaft sensor too?

has anyone had this problem???

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Old 03-23-2010, 04:58 PM   #2
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Join Date: Oct 2008
Location: south central pa
Posts: 83
I just bought a OBD II yesterday. Just looked up your code it says { manufacturer contrl ignition system or misfire } hope that helps.
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