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Old 01-20-2016, 12:36 PM   #1
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P0174

Code came up a few weeks ago, ran the code and found it was O2 sensor in bank 2, replaced all sensors and cleared the code. Then yesterday the could came back up again. Any ideas of what to do?
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Old 01-20-2016, 01:58 PM   #2
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P0171=lean bank 1
P0174=lean bank 2

There's a few things you can check, 1-dirty mass air sensor, 2- EGR valve, 3-fuel pressure, 4- vacuum leak. I'm sure there are techs on here that will give things to check also. And then there is always google. Probably something simple like the air flow sensor I'm thinking. Good luck!

---------- Post added at 11:58 AM ---------- Previous post was at 11:58 AM ----------

P0171=lean bank 1
P0174=lean bank 2

There's a few things you can check, 1-dirty mass air sensor, 2- EGR valve, 3-fuel pressure, 4- vacuum leak. I'm sure there are techs on here that will give things to check also. And then there is always google. Probably something simple like the air flow sensor I'm thinking. Good luck!
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