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How do I fix 'system too lean' trouble code

  

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Hello Scotty I have a 2007 Nissan Xterra that has a code P0171 

the scan tool not much help it’s telling it could be mass airflow sensor,vacuum leak,oxygen sensor. What could it be


2 Answers
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go through the troubleshooting here:

 

https://www.obd-codes.com/p0171

 


1
Posted by: @reds

it’s telling it could be mass airflow sensor,vacuum leak,oxygen sensor. What could it be

It could be the mass airflow sensor, vacuum leak, or oxygen sensor.


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