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2004
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MPV ES
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Repair and Diagnosis
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Engine Performance
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On-Board Diagnostic [Engine Control System AJ]
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DTC P0171, P0174: Fuel Trim System (RH) Too Lean; Fuel Trim System (LH) Too Lean
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Notes
DTC P0171, P0174: Fuel Trim System (RH) Too Lean; Fuel Trim System (LH) Too Lean: Notes
Fig 1: DTC P0171, P0174 Detection Condition & Possible Causes Chart
Courtesy of MAZDA MOTORS CORP.