Po315 crank shaft position not learned - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 3 (permalink) Old 10-18-2016, 02:40 PM Thread Starter
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Po315 crank shaft position not learned

Hi
my 2008 cobalt !
I disconnected my bcm computer under the dash to clean around it,
reconnected it and that s when this code came up po315 ,
how do you reset the bcm computer etc
a engine code po315 came up on my dash ,my code reader says -po315 crank shaft system variation not learned !
What can i do to fix this problem .

Thank you

please help !
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post #2 of 3 (permalink) Old 10-19-2016, 08:31 AM
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Did you try disconnecting your battery?

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post #3 of 3 (permalink) Old 10-19-2016, 09:19 AM Thread Starter
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Hi
thank you for answering ,
I disconnected my battery for 3o mins,
then I disconnected my battery over night ,
both cables ,
no change

please help !
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