1996 dodge neon check light

1996 DODGE NEON
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CERVANCE
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i was driving the otyher day it just came on did a cheap code check withthe 3 times igntion on/off gave me a 12 and a 21 does anyone know what these codes mean also today when i pulled into the driveway it went out any help would be great thanks
Jan 25, 2006 at 1:13 PM
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PTVICK
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code 12 means battery has been disconnected from PCM - nothing to worry about -

Code 21 refers to oxygen sensor problem. there are two on your car
Feb 23, 2006 at 4:13 PM
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CERVANCE
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thanks ill look into that
Feb 25, 2006 at 1:03 AM
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