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Okay so I have a 2007 Honda Civic coupe ex with a 1.8 l this past Saturday I was going to get my mom I was going up a hill and it was like it didn't have any power even though the gas pedal was down to the floor I was able to get it back home cuz I wasn't far from home I hope the code reader to it it gave me three codes one was po 847 which is transmission fluid sensor one was po171 and the other was po302 which is cylinder two misfire I was just wondering if anybody else might have this series of codes and might be able to help a single clueless Mom know what to do to fix it any helps greatly appreciated

 
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P0171 is for the primary o2 sensor. Might be time to change it. P0302 could be from the engine running poorly due to the bad o2 sensor. It's a good idea to take a look at the sprak plugs though.
Not familiar with the transmission code. Step one would be to check the fluid. Fluid needs to be warm (drive around for 10 mins) car off, in park, on a level surface.

 
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Thanks I'll try that

 
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Make sure you buy a denso sensor. And ngk spark plugs if you end up changing them

 
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Okay thank you for your info and trying to help I've got a few different people trying to figure out what it is