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Discussion Starter #1
Just throwing this here to help someone in the future.
2009 Rubicon unlimited would give a check engine light and a lightning bolt.
Idle would be rough and it appeared to be in a limp mode/reduced power.
Code thrown was P2173.
I replaced the MAP sensor for $37 from the dealer.
All is well in the world again.
Hope this helps the next person.

It takes longer to open the hood than to replace the sensor.
 
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