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2000
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Forester L F4-2.5L SOHC
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Repair and Diagnosis
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A L L Diagnostic Trouble Codes ( DTC )
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Testing and Inspection
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P Code Charts
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P0172
P0172
DTC P0172 - FUEL TRIM MALFUNCTION (A/F TOO RICH)
DTC P0172 is not listed in the manufacturer's service manual for this model. However, DTC P0172 is listed in the manuals for later year models.