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Can a P0442 cause a P0172?
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07-10-2011, 08:04 AM
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MMGT1
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Join Date: Jun 2011
Location: Canada
Posts: 1,319
Having a fuel leak, the 02 sensor is going to try and compensate for the leak, example, really rich. If you smell fuel, you have a leak. Replace that valve as soon as you can, reset the codes and fuel trim, then see how she does.
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