Thread: 99 Chevy Silv DTC codes P0171, P0174--o2 sensors?
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Old 12-03-2006, 05:04 PM
maxwedge maxwedge is offline
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Re: 99 Chevy Silv DTC codes P0171, P0174--o2 sensors?
Welcome to AF. First this should have been posted in the Silverado truck forum, but anyway, vacuum leak, air entering the engine unmetered, low fuel pressure, all issues here so addt'l diagnostics are required, not sensors. Possible skewed maf, also the baro readings need to be confirmed as accurate, again needs a full scan here not AZ.
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