1999 Toyota Sienna Does Diagnostic Codes P0171 Mean

1999 TOYOTA SIENNA
138,000 MILES
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What does diagnostic codes P0171 1999 toyota sienna mean?
Nov 1, 2012 at 6:14 PM
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ASEMASTER6371
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lean code.

could be mass air flow sensor, vacuum leak, pcv valve or low fuel pressure

Roy
Nov 1, 2012 at 6:16 PM
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