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Ayodele Posted on Mar 10, 2016
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Interpret trouble code p0171 - 2006 Toyota 4Runner

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paulmacintyre

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  • Toyota Master 3,218 Answers
  • Posted on Mar 10, 2016
paulmacintyre
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This code indicates a lean condition on bank one of the engine. Possible dirty/defective MAF sensor/vacuum leak/low fuel pressure on bank one/ defective 02 sensor. The best thing to do would be to monitor live scan data and see what may be causing this issue before tossing unneccessary parts at the vehicle

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